If you have a late flight, can you check out, leave your luggage with the bell service, go to a park, and then return to the resort to get your luggage and take the magical express to the airport??

The magic of Magical Express is that after you check your luggage in at the resort, the next time you see it will be at the luggage carousel at your destination airport. If you need to get into your luggage after visiting the park but before departing the resort, then you can check it in at that time.

Even if you're not going to take the Magical Express, you can leave your luggage with bell service and pick it up when you get done at the park

Yes😊

If you're taking magical express to the airport, you can check your bags through to the airline right at the hotel. You can also do what you suggested, but it's much easier to pre check the bags for your flight.

All resorts will hold your luggage if you arrive early before a room is ready or if you intend to leave later