I found this tour a little disappointing. First of all, there is not good location information on the website. It says that the tour leaves from the Independence Hall visitor center. This is not actually true the tour leaves from the corner of Market and 5th which is down the block and around the corner from the visitor center. I wasted quite a bit of touring time trying to locate the bus stop. Finally I had to go into the visitor center, wait in a long line, and then inquire about the location. If the website just said 5th and Market, I would have caught an earlier bus. When you finally do arrive at the corner, there is only a small podium that you have to find in order to check in.
We ended up getting on the trolley, as the next bus wasn't scheduled for another 30 minutes and it was too cold to wait. The windows are small, so it was hard to see the attractions. If I had known the trolley made things so hard to see, I would have waited in the cold anyway.
The tour guide was knowledgeable and did have some interesting information to share. However, his appearance was off-putting. His hair was stringy and his pants were literally fastened around his mid thigh, so I could see his underwear every time he stood up. I would expect the company to provide a uniform or at least require decent attire. He looked like he had just gotten back from a band gig or something. He didn't lend much credibility to the company.