Depending on the driver, we usually tip 15-20% of the amount before tax. We are also doing a fishing excursion. Just booked it today at my 90 day mark. Are going to try fishing the DTD area this time to see how the fish are biting. Tomorrow I am going to try to book a Wishes Cruise so we will see on that one. But, before when we did the Illuminations Cruise the Capt. was wonderful! He brought blankets, hot chocolate, and was a great conversationalist. (Our cruise wasn't to include any beverage and it was chilly) We tipped 25% as he also had brought a stuffed animal to give to my son. It was worth every cent to see his expression when the captain pulled that out just for him. Five years later my son still has that monkey he gave to him.