My diesel motorhome has the loud engine running only twice during my stay. Once when I enter and again when I exit the resort. The diesel fifth wheel or travel trailer tow vehicle makes the noise every time it is started, which is many times during the stay. If it leaves the the resort each day that is twice each day, exit and reentry. Some of the trucks do make a very loud noise. I have many friends who have all types and they had their reasons for making their choice. I have not stayed at a class A only resort.