The key is, you have to show up to check in. If you don't, you'll be charged, but won't receive points. This is the same with all brands that I know of. If you do this, you can check out over the phone the next day, but it's advisable to leave the view of the front desk before leaving right after checking in. (I haven't done this in many years - and for different reasons () - so I'd welcome additional answers.)