Well done! And welcome! Like you, we were at your stage with a then 16yo (girl), when we bought our camper. She was not enamoured with our choice, and yes sometimes we did leave her at home, as homework was becoming an ever increasing workload.
However we did find what worked was to buy her a little 2 man tent so that she had her own space, which she quite enjoyed when she came with us. It also gave her the option of bringing a friend, and suddenly she was the camping "guru"- which we would often have a little chuckle as we would overhear her spurt forth her pearls of wisdom re roughing it!
Since then we are now pretty much on our own, but another season of life has intervened with the never-ending responsibilities of ageing frail parents, which inhibits our ability to get away the way we would like to.
So....... if you have the opportunity, make the most of it- cos you never know what is around the corner!