It's been a few years since we stayed at FW so things may have changed. .
Depending on the water level, you may not be able to take a boat. My daughter uses a manual wheelchair and we were not able to use the boats at all during our trip. We either had to drive or take the bus. The CM said that if the water level is too low, they do not allow wheelchairs or
ECVs on the boats. I think that she said it was because the ramps wouldn't line up properly. My daughter was pretty little so we offered to hold her while my husband lifted her chair onto the boat. They still wouldn't allow it. It was a pain because some of the buses didn't have lifts and those that did, didn't always work.
Someone, please correct me if things have changed.