We left my DS4 at The Mouseketeers at Grand Flordian, while it was quite a small facility, it had loads of toys and games. It also had some gaming consoles, and they can also show Disney movies. You get given a pager, if you are staying on site, this was the first time we had ever left him with anyone this long, let alone complete strangers..I was pretty anxious, but really had no need to be. While we were up in V&A worrying about him being all right he was having a blast. He didn't want to leave! The food was only okay, if you get there before 6.30pm they will provide a meal, the usual kids options. The staff were very friendly, we were out in the GF grounds a day or so later and a cast member yelled over to my son saying "hiya Ben how's it going", I'm sort of "who's she?" "oh just one of the ladies from the club"
We had a peek at the AKL club when we stayed there (DS was too little at that point) and it looked a lot bigger. I think they have a view of the Savannah and the animals there too. The Poly one is the largest of all according to my guide books, but I haven't seen this one.