If you've already requested not to stay on the first floor, the only thing I would do is call one more time and make sure it's there. Then wait until check in to see if your request was able to be met.
If this was the only request that you made, your chances of getting this are very, very good. But, if you request to be in the 50s building, number 2, facing the pool, in a corner room, away from the ice machine but close to the elevator (not possible) with a housekeeper named Madge, well, your chances go down to nil.
We just got back from Pop Century and our only request was a king bed. We got that with no problems at all because it was our only request.