If you have enjoyed the services provided by your guide and crew, a tip will be very much appreciated. As a guideline USD 10-15 per passenger, per day, is standard for the crew, and USD 7-10 per day for your guide. Tips can be left in envelopes in your cabin on the last day of your journey. Some restaurants on the islands may already include a 10% service charge in the bill, in which case an extra tip isn't required. At places that don't include a service charge, feel free to round up the bill or leave some spare change.