Yeah, I figured it was not anything nice. We get in at 9:30 pm or so, will have already checked our luggage all the way home, and fly out next morning about 10:15 am. So, we don't want to bother with immigrations/security.
This is truly a case of sleeping in the room and nothing more. Simply a matter of convenience. The last night of a one-month vacation.....which begins in about 23 hours!
(OK....the last night is in the Sleeper Suite, 4E/F, on UA 747.)