Why did you guys have to ruin it by being greedy again??? The whole family had a wonderful time, beautiful sites, good music all round good fun. I do not drink at all so my view is clear as a bell. I had given a $20.00 tip during the trip because the guys were a lot of fun, good music and giving me bottles of water. Until the end of trip the man came up with the tip jar asking for tips from $20 - $100 tips. I said I had already given it earlier in the evening and he said it doesn't matter give me more. I said nicely no and you could see in his eyes the way he said no you have to give your tip NOW. Again I said no. I might add you do pay $38.00 USD per person for this trip. This is NOT GOOD BUSINESS. Sadly all the fun and beauty goes down the toilet at this point.