We had a trip this past Christmas and we were told, both when we booked and when we checked in, that we needed 1 passholder per foom
When we checked in, they asked to see the APs. We hadn't picked them up yet, so I showed the receipt showing 2 passes.
When they booked us into the rooms, I had to be the passholder for one room, and my wife for the other. We were travelling with her 3 young adult daughters, so we just moved one to my room by name only.
The rooms weren't ready when we checked in, and when we got assigned a room, we went to the front deck to get our cards assigned to the rooms. At that time, I asked if we could switch around so we'd have my wife and I in one room and the daughters in the other and they had no problem doing it at that time.
I can't say what the 'official' policy is - I can only tell you what happened to us on our trip. We were going to buy the 2 APs anyway, so I didn't have any reason to question them.