TOTAL RIP-OFF. The info on trip advisor is misleading. The total price for this (over $520 for 2) is way higher than the advertised "from $138). That comes to about $100 per hour per person. Once the boat left the dock we were told that we cannot go to see the advertised sites because of the high tide. Tide schedules are know for months in advance and yet we were sole tickets for a trip to see DC landmarks from Georgetown to the Congress, and ended up cruising back and forth around the national airport. The food was ok, standard conference fare, nothing special. The service was eager but a bit incompetent. We ordered a bottle of wine, which the server brought and promptly poured to four glasses and left. The wine was kind of warm room temperature. When I asked for another coffee, the server picked up my cup and went with it to the kitchen to fill it with coffee. I never seen anything like it. Overall, the Tripadvisor should be ashamed of putting this kind of rip-off operation on its website.