Staying in the same room usually isn't a big deal, but you will have to go back and check-in. Check-in for the next day begins at 7 am, though, not midnight. You can be back at the check-in desk right at 7, but midnight won't help you. I've arrived at 6:30 am before and had to wait a few minutes before we could check-in for that day.
Chris, aka Strmchsr
INTERCOT Staff: Vacation Planning, Guests with Special Needs, and Weather Guru