I enjoyed many aspects of the tour. We had two different drivers and both had good narrations. Here are some tips on the Hop on Hop Off Trolley: 1. The buses have windowed and open areas. If you sit in the open area, which you would think would be best for visibility, you will get blasted with 50MPH winds when they are on the Coronado Bridge or on other freeway sections. Hold onto your hat and your wig! 2. The buses regularly get full and if you plan to jump back on at a stop you may find there is no room. You will need to wait for the next bus or they will call for a bus for you. So you can get stranded and delayed when you can't get back on. After you see this stranding problem is a frequent occurrence it makes you reluctant to get off anywhere. 3. While the buses have a rear ramp for wheelchairs, these require the driver to let everyone off the bus before they are available to help the mobility challenged person to exit the trolley.