Are you driving or flying?
If you are flying then I would imagine they will be very good at honouring your request.
This past year we stayed at Caribbean Beach resort and we had a 2nd floor room. We found that since we drove it was really easy to leave the double stroller in the van rather than in the room. Then in the mornings when we came down on our way to the bus, we grabbed it and went. It also gave us soo much more room in our room without that big stoller taking up so much space. I don't know why we didn't do that the years before, lol.
Our plan is to do the same at POR, we will find a close parking spot to our room and leave the stroller locked in the van, I am imagining we will have even less space for a double stroller in the the AB rooms.