I used the following for scheduling my dinner at Palos:
PLAPLAP - Saturday/Wednesday/Friday
APLAPLA - Monday/Wednesday/Friday
LAPLAPL - Saturday/Monday/Friday
This allowed us to be in our regular restaurant rotation for both formals, tropical night and the light show. Brunch is only on sea days and we chose Sunday.
The times for the dinner you choose depends on what you want to do. We choose something like 6:30 or 7:00 pm. and still had time to make it to our regular rotation if we chose to, we did not. From what I have read Fridays at Palos books up quickly due to it being the last night. I could have chosen that since I was the second person in line, but went with Wednesday, we had PLAPLAP. As far as requesting rotations, I asked and was told that it would be noted in my reservation, but no guarantees. I really liked PLAPLAP. Would like to have it again. I suppose it depends on the ages of the folks traveling.
Hope this helps,
Vonda