We have used the kennels at FtW, TTC & AK. All have indoor pens, very clean & climate controlled. AK large pens are a little smaller (about 30"x48") than the largest pens at the others. All have outdoor pens, if you prefer. The TTC is the largest kennel with many indoor & outdoor pens. We have 3 Shar-peis and have recently kept them at the TTC in a 10'x10' outdoor pen - the largest one they have. This worked great because they could all be together, they had room to play and their own huge wall-mounted fan.
Beware that the kennel food is Alpo Come n' Get It dry, so you will want to bring your own food and probably dog dishes to help them feel at home.
Walking them 3 times a day is great for them and us - we can spend some time with them rather than being isolated in a kennel day and night. We have Disney fun on our walks - at the TTC our dogs try to steal Pluto's bone and go in his doghouse, at FtW they visit the trail ride horses & go for woodsy walks, at AK they ride the tram and have met the Lion King characters in the entrance plaza.