Not sure if anyone can answer this question for me.

If I turn a rental car in at a counter somewhere in or near WDW (like a Downtown Disney hotel), can I take the Magical Express to the airport if staying at a WDW hotel? OR, are you only allowed to take it if you also took it FROM the airport? Hope that makes sense.

It would save 3 days of rental car if we could take the ME back to MCO so I'd like to consider this as an option.