Old-Biscuit nailed this one.
Go, bring your sense of humor and pleasant attitude, and make some memories. Bringing a tent for the teens is a good idea, if the place you're going permits you to put up a tent.
Whether you'll want to repeat the adventure remains to be seen, of course...but if you all have a little bit of flexibility, I think there's a decent chance it might be more than a one-off deal.
When I was quite young, around three or so, my family (of five) lived in a Banner motorhome (named the "Banner Manor," the slight irony of which escaped me at the time) for several months while constructing our log home. We survived, and to this day love each other very much.
