Food and Drink
Eat
Apart from the kebab shops and pizza stands, dining in Denmark can be fairly expensive, but a worthwhile cost. Traditional Danish fare includes items as pickled herring, fried sanddab, and other assorted seafood items. Hearty meats are also prevalent, as seen in items such as frikadeller (pork only or pork and veal meat balls topped by a brown sauce) and "stegt flæsk og persillesovs" (thick pork bacon slices topped by a parsley cream sauce). Many meals are also accompanied by a beer, and shots of aquavit or schnaps, though these are mainly enjoyed when guests are over. Drinking along with meals is encouraged as the foods are enhanced by the drinks, and vice versa. For dessert, try either "ris à l'amande" (rice pudding with almonds and cherries) or æbleskiver (ball-shaped cakes similar in texture to American pancakes, served with strawberry jam), both normally only available in December. For candy try a bag of "Superpiratos" (hot licorice candy).
Smørrebrød
The traditional Danish lunch is smørrebrød, open sandwiches usually on rye bread - fish are served on white bread, and many restaurants give you a choice of bread. Smørrebrød served on special occasions, in lunch restaurants, or bought in lunch takeaway stores, are piled higher than the daily fare.
Drink
Danish beer is a treat for a beer enthusiast. The largest brewery, Carlsberg (which also owns the Tuborg brand), offers a few choices, as well as a delicious "Christmas beer" in the 6 weeks leading up to the holidays. Other tasty beverages include the aforementioned aquavit, gløgg, a hot wine drink popular in December. Danish beer is mostly limited to pilseners which are good, but not very diverse. However in the last few years Danes have become interested in a wider range of beers. During the Christmas season, Glögg, a hot spiced red wine with raisins and almonds is popular fare for warming up from the cold with a group of friends.
Source: Wikipedia.
Shopping
The national currency is the Danish krone (DKK, plural "kroner"). In the more "touristy" shops in Copenhagen, and at the traditional beach resorts along the Jutland West Coast and Bornholm Island it will often be possible to pay in Euro. The Danish krone is pegged to the Euro to an accuracy of 2.25%. In the 12 months from Aug 2005 to Aug 2006 the average exchange rate was 1 EUR = 7.46 DKK.
Automatic teller machines are widely available even in small towns. Credit cards are also widely accepted but not universally. Beware that many retailers will add a 2%-3% transaction charge (often without warning) if you pay with a credit card.
You should note that almost everything in Denmark is expensive; particularly if you're not from Northern Europe. All consumer sales include a 25% sales tax but displayed prices are legally required to include this, so they are always exact. If you are from outside the EU/Scandinavia you can have some of your sales tax refunded when leaving the country.
Source: Wikitravel.
Don't
When it comes to conversing with Danes, most do not expect foreigners to speak Danish and if the Dane can not figure out where you come from in Denmark by your accent, they will automatically speak English. 'Taler De engelsk?' is the polite way to ask if they speak English, when speaking to older Danes. However, this is a somewhat dated way of asking and most may just ask "Taler du engelsk?"
No respectful titles are necessary when addressing someone. The titles 'Hr' and 'Fru' have mostly disappeared from use in Denmark, and people are generally addressed by their first name regardless of the situation.
Despite their disregard for formality, Danes are very polite and well mannered while in public. Be sure to practice good table manners while at restaurants, and make sure to learn the dozens of ways to say 'thank you' in Danish.
Drinking alcoholic beverages in public is considered socially acceptable in Denmark, and having a beer out in a public square is a common warm weather activity there. But be sure to do so in moderation, especially during the daytime.
Source: Wikitravel.
Tips
Talk
Denmark's national language is Danish, a member of the Germanic branch of the group of Indo-European languages, and within that family, part of the North Germanic, East Norse group. It is, in theory, very similar to Norwegian Bokmål and Swedish, and is to some extent intelligible to speakers of those languages, especially in written form. Its sound, however, is more influenced by the guttural German language, though, rather than the lilting languages found to the north and understanding spoken Danish may be a trace more difficult to those who only speak Swedish or Norwegian. English is widely spoken in Denmark, especially in the larger cities. Many Danes also speak German, and it is widely spoken in areas that attract many tourists from Germany, i.e. mainly the Jutland West Coast, the southern part of Funen and nearby islands (e.g. Langeland and Ærø), and also in Southern Jutland (Sønderjylland / Northern Schleswig).
Communication
Bring your own unlocked GSM phone to make calls. Prepaid SIM cards are available at most shops and international calling can be reasonably priced. The prepaid credit generally only work in Denmark, but can be purchased in small amounts to avoid waste when you leave.
Stay safe
Generally: Denmark is very safe. No risk of natural disaster or animal attack. Crime and traffic are only minor risks. In the traffic: Danes generally drive by the rules (except for the bicycles) but may not be very helpful to other drivers in ceding right of way, etc. Watch out for the bicycles in the cities, especially when turning across bicycle lanes; they have right of way. On highways, make sure that you only pass on the left, and be aware that Danes like to drive fast. Also, as a special note to American drivers, it is illegal in Denmark (as in rest of Europe) to turn right on a red light. On foot in cities: As mentioned above, Danes drive by the rules, and they have every expectation that pedestrians do the same. Therefore, it is important to obey Walk/Don't Walk signals and avoid jaywalking in cities, simply because cars will not slow down since you're not supposed to be there. Also, take good notice of the dedicated bike lanes when crossing any street to avoid dangerous situations as bikers tend to drive fast and have right of way on these lanes. On the beach: Don't bathe alone. Don't get too far away from land. Don't jump head first in shallow water. Swim along the coast rather than away from it. In some areas undertow is a danger, but will mostly be signed at the beach. On many beaches, flags inform of water quality. A blue flag means excellent water quality, green flag means good water quality, red flag means that bathing is not advised. A sign with the text ""Badning forbudt"" means that bathing is forbidden. Obey these signs, as it often means that the water is polluted with poisonous algae, bacteria, or chemicals, or that there is a dangerous undertow. In the city: A few districts in major cities should be avoided at night by the unwary, or by lone women. In an emergency dial 112 (police/medical help/fire brigade). This is toll free, and will work even from cell phones even without a SIM card.
Stay healthy
Tap water is potable unless indicated. Restaurants and other places selling food are visited regularly by health inspectors and are awarded points on a 1-4 "smiley scale". The ratings must be prominently displayed, so look out for the happy face when in doubt. While pollution in the major cities can be annoying it doesn't pose any risk to non-residents. Nearly all beaches are fine for bathing - even parts of the Copenhagen harbor recently opened for bathing (read the Stay safe section).
Smoking
As of 15 August 2007 it is not allowed to smoke in any public space in Denmark. This includes government buildings with public access (hospitals, universities, etc), all restaurants and bars larger than 40 m2 and all public transport.
Source: Wikitravel.
Driving
By car
There are no toll-roads except the two big bridges: Storebæltbroen between Zealand and Funen (DKK 200 one way), and Øresundbroen between Copenhagen and Malmo (DKK 235 one way). Speed limit on highways: 130km/h.
By bus
Long distance bus-service between Jutland and Copenhagen is possible with the companies Abildskou (line 888) and Søndergaards Busser. An Århus-Copenhagen ticket is DKK 270 One way for adults with Abildskou. See also the overview www.fjernbusser.dk
By train
The primary Danish train company is Danish State Rail or DSB although there are other small rail lines operated by other companies. DSB also operates the S-Tog commuter rail system around the greater Copenhagen area. Eurail passes are valid on all DSB trains. Danish trains are very comfortable, very modern and very expensive. Tickets can be purchased in stations, from vending machines in the stations and via DSB's website. In addition to a ticket, some trains require a seat assignment. Most trains have 230V power outlets.
Due to worn out rails the trains are often late and will be so for the next few years. The S-Tog will probably also continue to be somewhat unreliable (use a 20 minute buffer if planning trips longer than, say, 20 minutes). All trips with trains and local buses can be scheduled electronically through rejseplanen.dk
By ferry
The only way get to most of the smaller islands, is by ferry. Ferries are the best way to get to Bornholm, a Danish island in the Baltic Sea, although it also can be reached by plane.
By car or bicycle
There are no toll-roads except the two big bridges: Storebæltbroen between Zealand and Funen (DKK 200 one way), and Øresundbroen between Copenhagen and Malmo (DKK 235 one way). Margueritruten is one 3500 Km long connected route of small scenic roads passing 100 important Danish attractions. It is marked by brown signs with the white Marguerite Daisy flower. It is marked on most roadmaps. Biking in Denmark is, in general, safe and easy. Drivers are used to bikes everywhere, and all major cities have biketrails along most roads. Denmark is quite flat, but can be windy, cold or wet on a bike. Bikes are generally allowed on trains (separate ticket is needed). Note that biking on the highways (Da: motorvej) is prohibited, and that this also includes the Great Belt Bridge and the Øresund Bridge. Trains can be used between Nyborg and Korsør and between Copenhagen and Malmö if you need to cross the bridges.