Its ok, tourist guide its not entertaining, i think if you want more tip you have to work hard by doing entertain the client or else dont expect more tip.
I had great experience. Due to the travel time, there is not too much time spent at the actual attractions, however, you do really get to see the MAIN attractions and it really is a worthwhile trip. My personal highlights were standing outside the White House as well as the Lincoln Memorial. If you have a limited amount of time, I think this the best trip.
Well organized trip with stops at the major attractions in Washington DC. Tour guides were thoughtful and explained to us the history of the sights whilst we were on the bus so we had more time to explore the sights ourselves when we actually arrived.
The bus ride was very comfortable, clean and prompt. We were shown a movie on the way back to break up the long journey.