Legal Question in Landlord & Tenant Law in Florida

You should be able to provide them with a copy of your Registration. If you don't have one you should be able to obtain one from the DMV. If you have not registered your vehicle (tags) you likely can be evicted even if it is not in the lease specifically. Many cities and counties have ordinances which require vehicles be registered and that could apply to the occupants of an RV park.

Also, a Bill of Sale is not the same thing as a Title or Registration. However, without the bill of sale or a title that was signed by the previous owner you may have difficulty getting title in your name or registering the vehicle. You likely also will not be able to register the vehicle unless you have current insurance.

Good luck.