Our guide, Damien, was really great. It is a bit stressful getting started, as you're biking in busy Manhattan, and I got the impression he pushed a bit to start so that he could identify who were the folks he needed to keep an eye on. He brought us around the park at a pretty leisurely pace, explained the things we were seeing, had great stories about the history of the city, interesting events, interesting people, and of course the park. It's 2 hours well spent, and he also had amazing recommendations for other things to do around the city while we were there. I would recommend the tour, and Damien in particular, to anyone looking for a great biking experience in Central Park.