State laws differ, but the at fault person is required to make you "whole." That would include loss of use, which is clear when your vehicle is in the shop getting repaired- substitute transportation is provided. Establishing loss of use for a recreational vehicle and missed camping trips is not so clear. In theory, the adjuster is to establish everything you lost in the accident including loss of use and cost to repair. In practice, the adjsuter is often paid, and certainly evaluated, by how much he saves the insurance company. When you bring up loss of use of yourr camper, don't be surprised if he says they don't pay for that when you are entitles to be made whole.
If you had personal injuries, your leverage with the insurance adjuster would be much stronger. Isn't your back hurting now from the force of the wreck? Perhaps you should be having pains that require medical attention.