We were there for 4 weeks in January and had to move because one of our weeks overlapped by a day and they couldn't figure out how to keep us in the same room because one was a Sunday check-in and the other a Saturday check-in. Seems like that wouldn't be too hard to do, since we would have been gone by the time the next Sunday check-in date arrived, but we were told we'd have to move. The room that they were going to send us to had just been painted and my husband explained that I couldn't take the paint smell, so they sent us to the new section.
Yes, it is walkable unless you have a real problem walking. The whole resort is circled around the main pool, except that the new area (the Keys) is just off the outside circle drive. However, we walked to the lobby area just about every day to make use of the free wireless, and that's right by the main pool. I'm not good at estimating distances, but I'd say it's about the distance of a city block.
I'm sure you'll like it. Also, you might want to try out the pool that is in the new section. It's a nice size and not as busy as the main pool area. The rooms are really nice! We'd gladly go back next year but they have that 1 in 4 rule, so we can't.
Lois