You can bring your own gear, cook your own meals, and stay in remote areas (boondocking) that lack hotels.
Modern camper trailers are often more aerodynamic and easier to tow than full-sized caravans, leading to better fuel economy. The Case Against Buying (Cons) RV Camping Essentials: 22 Must-Have Items | Cruise America
Families can save up to 48%–55% on vacation costs compared to traditional air/hotel travel.