Vicnmickey, We have the same problem. There are 7 of us and 1 needs to catch a flight at 12:30 and the other 6 of us don't leave until 3:35pm. We have arranged with Yourride to pick us up at the port at 9am.
Here's what I've learned so far. We can ask Yourride to take 6 of us to DD and the 7th to MCO. Of course then we'd have to arrange to be picked up at DD 3 hours later and taken to MCO and it would cost more money.
I've just asked on the Transportation board if there is a mall or park near MCO. There has been one response that there is a Florida Mall about 15 minutes from MCO but I doubt if there is a free shuttle service. If you have your own rental car you could easily go to DD or the mall. Evidently there is a little mall at MCO with WDW and Sea World stuff to buy. Hope this helps, Linda