How many are we talking about? We could reserve a hotel on the coast of Maine or Nova Scotia, or even Prince Edward Island, hold the thing in August, and let the kids go wandering around in pine forests or exploring tide pools along that fabulous rocky north Atlantic coast. We'd need a stage, but if we reserve a hotel it would have something like that. Personally I'd MUCH rather travel to Maine OR Nova Scotia in the summer than go to Florida. (OTOH, what do I know? I'm a newbie and I don't really sing, except as backup to my son or bro.) At my day job I sometimes help organize conferences; this would be quite do-able with this much lead time. My 2 denarii.