We have been on airboat rides several times in the Everglades. We have had drivers who actually went too slow and others that gave us a great ride.
If you can obtain the name of the tour company, you could probably call them and ask your question. Some of the airboat rides go through mangrove forests and others "fly" over
the swamp grass. I suppose it could make a difference which area you would be touring.
As Dave mentioned, they do wave-jump sometimes. Don't know if that would be an issue for you or not.
If you are able to manage it, medically, it's a fun thing to do.