Caution, shameless plug ahead.
Bring the lad to the
RV BBQ. It won't cost you. (news on that later)
But I have to ask, where does your son want to go with you this year? If he wants to go to OSH, man, don't think about it terms of dollars. Long after he's gone, you'll still have money. But you only have your 14-year old once.
And let me tell you, he's not far away from the age in which he isn't going to want to spend a lot of time in the summer with you. Hear me now and believe me later...