Originally Posted by
dtremit
I believe the eStandby upgrade is administered by a third party (Nor1) -- and that hotels manually make day-of-arrival decisions on the requests. The Web Checkin emails are presumably generated by a Hyatt corporate system. I doubt there is any tie-in between the two.
You're right. eStandby is a 3rd party software by Nor1.
Hotels do have to process each request one at a time, on the day of (or earlier if you're lucky).
If the hotel awards your upgrade a day or two early and preblocks you into the room, chances are when you do the webcheckin' it was already granted and waiting to be checked in generating a check-in confirmation e-mail from the PMS itself.