Great tour for the money! Took my family of 5 on the tour and was able to squeeze us all in at one of their designated stops. I bought tickets through Viator and only had to make a quick hop off to get official tickets at stop 1 and then back on to finish the rest of the tour. Tour guide was very informative and funny. The kids loved the tour first time for them to see Boston and we all enjoyed the cruise of the harbor too. Great way to see the city if you have never been here before.