I didn't like this tour. There was less of an itinerary than on the other Disney guided tours I've been on. The tour was dictated by the tour guide and the people on the tour. That could have been good, but it wasn't. A few people in the group totally dominated the tour by asking question after question after question.
Also, people from different parts of the country were on the tour together. It got kind of boring to listen to gardening tips which did not apply to me at all. (If you're from the North, your gardening needs are very different from the needs of people who are from the South.)
It was a lot of, "What kind of tree is that? Will it grow where I live?"
If you're going to pay for a guided tour, I suggest doing one which goes behind the scenes. It's fun to see things that are off-limits to most people, like the tunnels under the Magic Kingdom. You'll remember that much longer than you will remember three hours of Name-That-Tree.