Long Class A rigs with Trailers - Where do they stay?

We are at a KOA in Nashville and there are a number of sites here that accommodate those ~ there are some here now. There are a few parks we have been at across the country that can handle them. Some parks will take your trailer and store it somewhere on the property, but not in your site. Many parks will ask if you are towing a car or a trailer, etc. Many will have some option for you.