Yes, rescue, and I can reccommend Small Paws Rescue.org. That is for Bichons, we foster for them and have two Bichons. They are fairly small, 20lbs or less, and are good travelers. Our boys often stay in the rig, sometimes for 8+ hours without a problem. They have their crates but mostly are in them at night so we all sleep better. Our Jake went on our 45 day caravan thru Western Canada and Alaska 3 years ago and he mostly did better than we did. He only objected at the end as he was tired of being in the truck every day on the last few days getting home.
Do not ever leave a pet outside in an RV park unattended for more than a few minutes, for both the well being of those around you, and most of all for the well being of your pet. Besides being unkind to your pet l it is not allowed anywhere I have ever been. It would be like leaving a small child uncared for in a strange environment. We leave windows open slightly and the Fantastic fan going unless it is very warm, then the AC in that case. We usually leave blinds closed where the boys can see out so there will be no barking at other dogs. Those around us assure us that the boys do not bark while we are gone, so that is a good thing. They are both well house trained and can, if need be, go 8-10 hours, but we t y not to require that. If a dog is crate trained they usually will not potty in the crate, but you want your pet to not be to so restrained during the day, if possible, we think. Our boys sleep in their crates at night.
Most of all do what will make you happy in your travels. Hope to see you down the road. Jake and Rocky say WOOF