Angela, it was 2 funny.... Been there, done that! I bathed 2 newfs in a motel room once. Not a show site motel, but when I was living out of town, there just wasn't anywhere else to do it and they needed it. I thought I was never going to get the bathroom cleaned back up, but they never knew, and I did not blow them dry there. I have however ran extension cords out of motel rooms and soaked them down with spray bottles, when needed. Now there are more do it yourself dog washes, so I'd try that first.
Anyway, the AKC rep probably would be clueless. The show superintendent office, or one of the officers of the other host clubs offering the other shows, would probably be a better person to answer your questions. They should all have some familiarity with the show site. The Rep answering you like that is just being an idiot, IMO. Everyone knows that people are traveling from all over the country for this show, so the bathing/electric facilities are very important. Many handlers always use the facilities on site, as they are going from one show to another.