Labor Day lapse of sanity

I think I've lost my mind. I agreed to go on a three night camping trip with my girlfriend, her husband and their eight kids. My nine year old is going too, but my sixteen, soon to be seventeen year old is staying home. He is too much into having a shower at least once a day and smelling good at all times. This is not exactly roughing it, though. We have a tent and an old camper, but there is no electricity and you have to shower/shampoo with a garden hose. Sounds like fun, huh? It will be. I mean the kids can fish and swim and ride their bikes. We can have camp fires at night and roast marshmallows and make s'mores. I'm getting stoked already!