It's one of my favorite tours(well really the only tour I've done). I've done this tour a few times using my manual wheelchair. It's 100% wheelchair accessible. I've never had any problems with this tour. I can't speak for an
ECV on this tour though, there are a couple of corners that might be tight and I really have no idea on an
ECVs turning radius.
The tour takes you behind the scenes of the Living With the Land ride. Your tour guide gives you a nice up close tour of all of the hydroponics, fish farms and various other things that you see from the boat. Questions are asked and answered. In my experiences the guides have been great. Also usually the tour is usually just a couple of families.
I don't always get to take this tour. But it's one of those things that I try to do every trip.