I would think that as long as you're there, actually at the airport, 2 hrs prior to flight departure, you should be okay. If you're using DME, you'll most likely be picked up 3 hrs prior to departure, which 'should' get you to MCO 2.5 hrs ahead of time...which will be perfect.
Depending on the airline you are traveling on, you can most likely check your bags at your resort, at least 3 hrs prior to your flight. What airline are you flying, and what time is your flight??