We're AP holders and looked into getting La Nouba tickets on our trip in March. There was definitely an AP discount for category 2 tickets (the majority of seats are category 2). It was a pretty good discount...I want to say 35% off. The tickets usually run around $90 each and the AP price we were quoted was in the 50s. We didn't end up buying tickets, so I can't remember the exact amount...but it was a considerable discount!