Keep in mind that the number of people that can SLEEP in an RV is not as important as what you are going to do with them on a rainy day!
4 bored kids and two frustrated adults in an RV is a recipe for a real bad day!
Yeah, been there, did that!
I have had just about every kind of RV except a pop-up. From 8 foot truck camper to 11 foot TC to Class C to Class A (this is my third A) to fifth wheel.
I like the A best of all.
IMO, the major advantage to an RV over a hotel/motel is I know who slept in that bed last night, and what germs they were carrying, and how clean they were, etc. I also know who cooked my meals, and how the food was stored and prepared. Not that we don't eat out occasionally, but it is nice having our own kitchen if we want to use it.
I gladly pay the price in fuel economy to have the convenience.