For tent trailers it’s not essential that you buy a sleeping bag, although it may work better. Instead, you can just use blankets from home. Depending on the type of trailer you bought the trailer might have a built in heater and even sometimes heated mattresses. If you don’t have a heater in your tent trailer it would be a wise idea to buy one. Since with a tent trailer you need to pop it up you should always have a leveler on hand while you’re camping so your trailer won’t roll away. Since the Trailer is on wheels you should bring some small pieces of wood to stop the tires from rolling when you park the trailer.