If you're only getting the AP for the discounts, definately make the reservation first, then get the AP's. In my experience the AP rate was very difficult to get, they sell out almost immediately. We were on vacation the day the rates came out for this December and by the time I called 2 days later they were sold out for our original choice and several others as well. If you're going to get an AP discount you really have to watch for the day they come out and call the second you find out they're available!