MK does not have a lot, you have to go to the transportation center and catch a monorail or boat. The monorail is not running until 9 or 9:30 I believe due to maintenance. We are in the same "boat" per say. We wanted to drive to TC and catch monorail for our early ADR to Crystal Palace
If anyone has any suggestions, or info that would help, I would love to know, are we going to have to take a BUS to get there early???