Replying to Windells Housing & Questions

I'm in a difficult place right now trying to make an important decision about Windells this summer.

I'll start with the basics:
My cousin and I have officially decided that we are going to Windells this summer (We've been trying to go for years, and I'm so glad it's finally going to happen). I'm from NY, he's from VT.

We are planning to go session 5. He will be 16 and a half, and I'll be turning 19.

I've been telling him it would be sick to get a condo pretty close and then pay the day camp price of Windells. I've been looking, and there are a lot of nice places with pools and stuff. He thinks it would be cool too, problem is, when you add in a car rental and stuff, it could total to much more than going the overnight camp route.

Since I'll be over 18 and he'll be under 18, we would have to stay in separate places anyway at Windells, right? (I don't want to do that.)

With me being almost 19 at Windells, would it be corny to stay there anyway? Not tryin to hate on the camp, it's just that every picture I see, the kids all look about 12-16.

And if we got a condo, would that be missing a lot of the experience at Windells? I figure if we have the car, we go back and do the activities like the trampoline and foam pits until everything is done at night anyway, right? Or is that not how day camp works?

And finally, going back to the age thing, there would be groups of 17-19 year olds or whatever skiing & getting coached right? It's not 90% young kids?

Thanks to anyone who can answer, it's greatly appreciated; when I can get answers to these questions I'll probably be signing up soon after.