My response on the airport to Disney World rout assumed you would get a commuter train, not high speed rail. That could maybe make sense, not a high speed train from Tampa to Orlando.
Agreed, but a train running over to the Cape and maybe down to Merritt Island and back makes sense also. So many people want to do the whole fly-in Disney/Orlando thing but don’t like renting a car just to get to the beach, a normal commuter train making that route would probably do quite well. There are also a lot of workers driving the Bee Line from the coast who might like to get back and forth from Orlando using it daily too.