I have never saved a vacation on WDW site before and did so on Sat. I did receive the PIN twice as well! I had been debating as to whether or not to get APs for our Feb trip (we have the PIN through Mid June and want to return early Dec to see Christmas decorations) It did work for me and I'm sure it is related to the saved vacations since one of them was referenced in my PIN email (obsure place for the PIN bottom right of email) Can't hurt to try, doesn't cost anything!