Checking into a large Doubletree tomorrow for a 1 night stay. Lifetime Diamond member with over a dozen stays and 30 nights at this hotel.

No upgrade in advance.

e-Check-in offers paid upgrades starting at $10. Room list shows at least 50 rooms (of my reservation type) to select from, and 25 rooms I’m able to pay to upgrade into. Wonder if their algorithm is expecting a high number of bookings in the next 20 hours.