Surely this has been asked but I can't find it. And I've done it but can't remember. What time is late checkout for Mlife? Flight leaves at 9:30. I'm torn btw getting a late checkout and ponying up for the extra nite even though I won't use it. The extra night will cost me $140. I think a late checkout is $40. I'm mostly concerned that an extra day on a 4 nite trip, on which I obviously won't gamble will cut my ADT by a 1/5. Which is kind of a big cut. DO you think if I took the room for the nite but then actually checked out (as opposed to just leaving as I usually do) would negate the ADT cut?