I love my dogs as you can see by my signature. All of our dogs have been rescue dogs. The most we've traveled with is 3, right now we have two. I see no problem with your having four, but others do and since it's your money, go where it is accepted. It always pisses my husband off when we had the three and RV parks limited us to two. His question was for them and those that charged extra for pets, was, "Do they limit the number of pets for the amount of poop or charge more for the amount of poop they have to pick up? Not! Because they don't do either!". Well, our dogs are not barkers and we take them with us when we go out touring, but I'm sure others don't abide and the RV parks have to either abide by their insurance clauses or to keep their non pet owner customers happy. Go somewhere else. Who needs that hassle anyway!