Montenegro is generally a safe country. There is, like all countries in the world, a number of criminal activities, but police forces are generally fast in their duties. The number is 122, as well as the international distress call 112. Organized crime is regarded as being widespread, but doesn't target tourists. When travelling in the areas bordering Kosovo, it is recommended you keep to the main roads. Unexploded landmines may remain along the Kosovo border. You should also avoid areas where there is military activity.
In the resort towns such as Kotor, Budva, Sveti Stefan and Herceg Novi, beggars and pickpockets are not uncommon. As in many other European locations, beggars are part of organized crime groups. Do not give them money. Doing so may also make you a target for more aggressive approaches. Always carry your bags in the safest way, slung around your shoulder with the pouch in front with your money carried under your clothing where you can keep your arm or hand across it.
Prostitution is illegal, so it's best not to engage in it.
The official language is Montenegrin. It is essentially the same language as Serbian, Croatian and Bosnian. In some municipalities with an Albanian majority Ulcinj, Plav, Gusinje and the Malesia district in Podgorica municipality, the Albanian is commonly spoken. Slovenian and Macedonian are also understood. Even though their languages are virtually identical, people still distinguish between the Montenegrin, Serb, Croat and Bosniak ethnicities, Montenegrins forming a slight majority. Montenegrin, while found written in both Cyrillic and Latin forms, Latin text is found to be much more common in usage than in neighboring Serbia and the Serbian portion of Bosnia.
In Podgorica and the coastal area, many people can speak some English, but that is not always the case in the north. Older people sometimes have a working knowledge of German. Italian also comes very handy, especially along the coast.Russian, which belongs to the same family of Slavic languages, is also heard sometimes.
You can buy mobile phone sim cards already for € 1. With that amount of credit, and if you plan to stay a longer time in Montenegro, making local phone calls, it will be certainly worth the expense. As of 2011 you need to fill in short form and show ID or passport in order to activate prepaid number at local operator's store.
Montenegrins are generally, like most people in the Balkans, very hospitable and welcoming to visitors.
Short pants are usually not permitted inside the public institutions hospitals, etc. Wear modest dress when visiting monasteries and churches.
At beaches, taking off the bottom piece of a swimsuit will likely create a stir, and is generally reserved for designated nude beaches.
Being visibly drunk is a sign of bad taste and character in Montenegro: You may be invited to drink gallons, but are expected to be able to hold your drink. People also usually prefer to sip their liquor instead of emptying it in "bottoms-up" style. Be careful, "rakija", a plum spirit usually about 53% alcohol content, is stronger than expected, and will make you drunk fast!