Personally I don't have kids but I would think that kids would have a very good time with all the dogs and the pond! We can always use good drowning victims for the water workshop too!
Just be sure that EVERYONE brings a lifejacket if they intend to get wet in the pond! With all the dogs there, I would hope nobody would have trouble, but we need to stay on the safe side and many dogs can get upset if their people are in the water.
Susan