Just know that they charge you by like mile, day, and overall rental. Plus you have to pay for campsites. So renting one to be delivered to an actual campsite may be a better bet in the long run (money wise).
We've never rented from... but we do we rent out our personal RV (class A) on RVShare and Outdoorsy.If I can help answer any questions you have around the renting process, let me know. RVShare/Outdoorzy you are usually dealing with a person's personal camper... cruise america is a business.