I wish we'd done this the first day, so that's our own fault. It gives a great wrap around guide of where to go, things to see, and a general layout of how to get to and from there.
It was quite hot in some sections like toward Old City. As many others have said, low hanging branches could be a problem.
Our guide was well informed, but used "um" and "uh" to insane degrees.
We waited at one stop (#18) for only about 15 minutes, so no issues there, though I do wish there were benches to sit at while waiting. It's also great that both the brown and red bus apply.
By far my biggest complaint was the system of on and off. The driver wouldn't stop at every stop if no one wanted off or on, which is fair. But the way to get off was literally telling our guide what stop we wanted off on. This disrupted the information quite often and in one case, the guide had a back and forth with a patron for a full 2 minutes as everyone else just sat there getting zero information.