We have stayed at POLY for the past 2 years and really debated about it this year. But we decided this year to wait until next to return due to the room renovations. But enough about my dilemma.
For you, first off CHECK your DATES, the Volcano pool is going to be closed from like March 1-15, that is a deal BREAKER for this family. The quiet pool is way too small to hold all those guests and we don't want to hop on the monorail to use a pool..plus then you deal with the having 2 hotels using one hotel pool, crowds...Also GF pool is closed I believe I read March 7 and 8th...My dilemmas on that is 2 years ago we went and stayed at POLY, and the quiet pool was supposed to be up and running when we got there, NOT TRUE, it was down for at least a month after our visit...
Now if you don't hit the closure dates at POLY, I say stick with it. Its your first visit, so the rooms shouldn't bother you, unless you like bright crisp rooms, which they are not. But they are still nice. Honestly what I love most about the POLY is the monorail, and the scheming of the hotel.
I also want to stay once at GF, but I want to wait until the rehab and construction is all done. I don't want to hear hammers. But do know at POLY some longhouses, one at a time will be closed due to renovations so you will see construction also...
You will have a great time, POLY is beautiful, and soon the rooms will match up with the grounds...