I have what I think is a similar situation coming up in a few days. I'll be checking out of Hilton A on the same day that my partner will check into Hilton B. My partner will be doing the checking in at Hilton B and I will join her later in the day. It's quite possible that I won't have checked out of Hilton A before she checks into Hilton B. From a stay credit and night credit point of view this won't be a problem - different properties, checking out of one and into another on the same day. However, if I haven't checked out of Hilton A, will my partner still be able to check into Hilton B without issue?