I have never stayed at AKL, but I have stayed Concierge level on my past few visits, and I've come to learn not to expect too much from them before my visit.
My first time staying Concierge, she wasn't able to get me a single PS out of 4 requested several months in advance. Of course, I didn't learn this until check in. I was pretty upset, thinking everything would be in place once we arrived, and literally nothing was. What in the world was I paying for!?
Once we were there, she did manage to get us last minute ressies at Cindy's after a cancellation, but I wouldn't count on them for advance planning.
They are great making plans for you once you are there, however. And I love having the snacks and lounge available.
Just be glad you already made those PSs.
Don't expect too much as I did, that can really ruin your trip - or a least your first day (as mine was - to say I was dissappointed is an understatment). Just go, enjoy the perks, and relax. Hey! You're in WDW!