We were just there in October for a conference.
Yes, the Gaylord is a gorgeous property, beds are comfy and service is great.
Pool area is nice and relaxing - not huge but very 'doable'.
Food is massively expensive, however, you do have a fridge of a decent size in the room (no microwave).
Paying for parking.
Paying for resort fee.
Hallways are massively long depending on your room location. If you do have a rental car, I would highly suggest trying to get a room close to the entry of the parking area. You can valet but more $$$.
As we were not going to the parks this trip (co-worker & I), it was fine and had everything we needed. I had just stayed there in February so I had experience with location (and it is also virtually identical to Gaylord Texan - 3 conferences there) and getting to DTD & outlet mall from there. However, in February when we were there on a vacation I won, we had parking expense at hotel as well as parking expense again at Disney (as we didn't want to rely on shuttles). So you get hit double if you are vacationing for the parking.