If you can't build a canopy, at least buy a cover designed for it. A tarp doesn't breathe and can trap moisture. The first camper I didn't cover and was amazed how much junk would collect in the rain gutter and against the roll out canopy.If and when you buy a camper, build a canopy to park it under when it's sitting at home not being used. You're welcome.
Another thing I did was installed a 30 amp breaker and outlet on the storage shed beside where I park my camper. I had been using a 30 to 15 amp adapter plug and it got a hot spot on it and melted.
Having it plugged in helps maintain the battery. Plus it came in handy when our grandson lost his job due to coronavirus and he stayed in the camper a few weeks last year.