It's a GREAT deal because you not only get the discount off of the room - but you also get the discount off the tickets. Essentially 3 nights room & 3 park days free if you book for 7 nights. See the write-up on mousesavers.com. Mary says it all.
Our example, we were going in July & I had booked a 1-bedroom villa at OKW. The room ONLY with the AP discount (usually the best) was $2700, I cancelled that I booked a 7 night Fairytale package for $2568.00. This INCLUDES the UPH's for 8 days. Yeah! Your results may vary depending on how many days you are going, but I'd check into it.