Hi sunny
To keep things simple, many Hotels (Resorts) include these charges within their food, drink and room prices.
Goods and services in the Dominican Republic are subject to a 16% government value-added tax.
At restaurants, for example, the bill includes the 16% ITBIS and allows restaurants to collect a 10% service charge.
This means an additional 26% can be charged to your total bill.
It is also advisable to ask your Restaurant rebefore ordering if you wish to pay by credit card.
Greetings Pascal