We bought the 2 day pass, and we had a lot of different tour guides. They were all very informative, and knowledgeable, they all gave you different tidbits. By far Cindy was the best. Yes, as one reviewer said you can only go around 1 full time,that's only if you don't hop off anywhere, if you get off at any stops you can get back on and go to other stops. We would go where we wanted to go, and then when we were ready to go back to our hotel; we would get the trolley back. In our case, we stayed at the Revere Hotel, and stop 7 was a block away from our hotel. The trolleys run every 15 minutes, so you never have to wait long for it to come, however, the last trolley ends at 4:30; so make sure you plan your stops accordingly.