Santo Domingo is the centre of business in the Dominican Republic. Good working relationships are vital and trust is an integral part of doing business in the Dominican Republic; knowing the right people is half the battle won. Appearances are considered important and therefore dressing smartly is advised. Meetings are initially rather formal and a polite greeting accompanied by a handshake is common; expect small talk. Business cards are usually exchanged on introduction. Punctuality is important. Although English is widely spoken and understood, it is still useful to have all business material printed in English and Spanish. It is important to be polite and courteous at all times. Business hours are usually 8am to 12pm and 2pm to 6pm Monday to Friday.

The Dominican Republic is hot and tropical, with little seasonal variation in temperatures, which average about 77°F (25°C). Seasons can, however, be determined by rainfall, with October to April being the rainy season on the north coast, while May to November is the wettest month in the south of the country. The driest area is the west. Cooler temperatures and less humidity are generally experienced between November and April, while the mountainous interior is always cooler than the rest of the country. Hurricanes occur on average once every two years on the island, most striking the south of the country and most happening in August and September. The busiest time of year to visit the Dominican Republic is between December and April when North Americans take a tropical break from their winters, and from June to September, which coincides with European summer holidays.

The international access code for the Dominican Republic is +1, in common with the US, Canada and most of the Caribbean, followed by 809 or 829. The outgoing code is 011 followed by the relevant country code (e.g. 01144 for the United Kingdom); the outgoing code is not required for calling North America. The local mobile phone operators use GSM networks and have roaming agreements with most major international operators. Direct international calls can be made from numerous telecommunications centres located in all towns and cities. Internet cafes are available in the main towns and resorts.

Being polite to others and having respect for elders is integral and is expected from visitors. If taking a photograph of a local, one should ask permission first and then offer a gift afterwards. Dominicans take care in their appearance and form judgements based on what people wear; they are likely to look down on tourists that are unkempt or wear clothes that are too revealing.

Travellers to the Dominican Republic over 16 years do not have to pay duty on 200 cigarettes or 1 box cigars; 1 bottle of alcohol, unopened and maximum of 2 litres; and up to 2 bottles of perfume for personal use. All animal products are prohibited.

Electrical current is 110 volts, 60 Hz. American-style two-pin flat blade plugs are standard.

No vaccination certificates are required but precautions are recommended against Hepatitis A, typhoid, rabies and polio for those who plan to spend time outside the main tourist resort areas. There is a malaria risk throughout the year. Between May and September there is a risk of dengue fever, which is contracted from mosquitoes that bite during the day. It is advisable to use mosquito repellent. Travellers should be aware of the high prevalence of the HIV/AIDS virus in the Dominican Republic and take the relevant precautions. Water should be regarded as being potentially contaminated in undeveloped areas; bottled water is available. Some species of fish, including tropical reef fish, may be poisonous to eat even when well cooked. There are good hospitals and other private medical facilities located in Puerto Plata, Santiago and Santo Domingo, but outside of these cities facilities are limited, and staff are unlikely to understand English. Most resorts have doctors that can treat minor medical complaints. Health insurance, including provision for medical evacuation, is recommended.

Spanish is the official language, but English is spoken in the main tourist centres.

The currency is the Dominican Republic Peso (DOP), divided into 100 centavos. Many of the hotels and restaurants in the main tourist destinations display their prices in US dollars as well as in Dominican Pesos, as US dollars are widely accepted and some places will also accept Euros. The peso cannot be exchanged outside of the Dominican Republic. Major currencies can be converted into pesos at Central Bank approved bureaux; only 30% of the pesos bought can be re-converted and this only if the original receipts are produced, so it is best not to buy more pesos than you are likely to need. Major credit cards are accepted everywhere, but a commission is usually charged and it is recommended that you only use your credit card at your hotel as fraud incidents have been reported. The best exchange rates are paid on US travellers cheques and secondly on US dollars cash and are best exchanged at exchange bureaux ( casas de cambio). Banking hours are Monday to Friday from 8.30am to 4.30pm; some banks also open on Saturday. ATMs are widespread.

In lieu of visas, Tourist Cards can be issued on-arrival to certain nationals, at a cost of USD 10 for a stay of 30 days. Extensions are possible. A return or onward ticket is required by all visitors, as well as the travel documentation needed for their next destination. As part of the Western Hemisphere Travel Initiative (WHTI), all travellers going between the United States and Canada, Mexico, Bermuda, and the Caribbean region are required to present a passport or other valid travel document to enter or re-enter the United States. If departing from the USA, a valid passport will be required by immigration authorities. NOTE: It is highly recommended that your passport has at least six months validity remaining after your intended date of departure from your travel destination. Immigration officials often apply different rules to those stated by travel agents and official sources.

Due to the recent unrest in neighbouring Haiti and the ongoing unpredictability of the security situation, it is inadvisable to travel across the border to Haiti. There is a low terrorism risk and incidences of violent crime are infrequent. Visitors should take normal precautions against petty crime, however. The Dominican Republic is vulnerable to hurricanes from June to November.

Hotels and restaurants generally include a 10% service charge as well as tax, but additional tips should be given for good service as often the charge does not go to the staff who provided the service. Waiters usually receive 10% extra for good service. For other services including taxi drivers, tipping is discretionary depending on the service provided.