I just returned from a weekend trip to the Poly, and it was AMAZING! We did the advance check-in 10 days out and everything went smoothly (even though we didnt book through Disney). I made sure they knbew I was having packages sent and I asked for certain things, such as 3rd floor Samoa, but I didnt get my request. I got upgraded to concierge!!! We got to stay in the Hawaii building and it was so cool, and totally unexpected. When we checked in, we went to an empty Advance Check-in line, a woman gave us our booklet (and, like, 20 packages), and told us we had been upgraded. I was beside myself, and absolutely shocked. We had room 3524 and had a view of the quiet pool.
The rain held off the whole weekend and we had a fantastic time. The sold out
MVMCP was really fun, and although we had planned to shop the rest of the weekend we got to go to Epcot and MGM. I miss it so much and I am having post-disney depression.
If you have any questions, feel free to ask.