We loved NASA's Space Centre. The City Sightseeing Tour was okay but I had hoped the city tour would extend further out e.g. to Herman Park. The person guiding the city tour was well informed.
A great tour. The pick up point was not at 1600 Lamar Street where we were waiting which caused us some stress, it was not even in Lamar Street!
Value for money! In your information though, to help out of towners, tell your customers to meet at the West End of the Hilton outside Pappasitos. It was a beautiful day to ride upstairs on the open double decker bus. We had a bit of a scare though when the railroad boom gates came down on top of the bus. If we hadn't seen what was happening and ducked there would have been a few bruised heads! The guide was downstairs at that time and we believe he didn't even realize what had happened! It certainly got a number of riders heart rates up! We have since also visited the Theatre District and suggest if possible that you include that area on the tour if it was and I missed it silly me.
The trip to NASA took longer as the traffic was heavily congested a wreck. The bus driver maneuvered through the traffic jam well and still got us there with enough time to see some sights. It would be nice to have longer there though. A 4:00pm pick up is a bit early when NASA doesn't close until 6 ish.
All in all a good day though. Pleasant and knowledgeable bus tour guide and a good overview of the city. Would recommend.