I thought the time had changed back now to the usual 3 hrs. The 4 hrs was due to MCO reccommending getting there earlier with the Holidays and construction at the airport.
But even then, although many reported having to sit around at the airport (especially if they had pre-check), there were also a number who missed their flights even with the 4 hrs pick-up.
In any case, you can just take MDE one way, not a problem. Just let them know. Can you not just use the Uber black (?) service that comes with car seats. I’m sure they can drop off at the airport, just not pick up.
But I’m confused why you think you can’t do breakfast, pool and lunch, even with a 4pm pick-up?