We did a day trip. Flew in the night before, picked up a rental car and stayed off-site that night. Woke up and rope dropped Epcot. Left Epcot around 2 for MK and that nights
MVMCP. Left MK about 4 5minutes after close and took the rental car to McDonalds on property and had a snack. We took a quick nap in the rental car. Returned the rental around 5 and headedto our gate for our 7am flight home.
So yes it can be done. I would make a habit of it but now it's a core memory for us and a fun story to tell.