Taxes are generally included in hotel and restaurant prices, and that information should be readily available to you when you book your vacation.
For tipping, give 5% to 10% of the price of a service. You should tip the following:
Excursions are also tipped, usually about $5 for a half day trip and $10 for entire day trips. You can tip other people, such as gardeners and security personnel, if you so desire.