for god's sake don't go to church camp, they will just poison your thoughts and delude you and make you see the world the way they see it witch is stupid and wrong, plus, wear whatever you want!!!
I am guessing that you didn't choose to attend the church camp, but "ware" whatever your parents think is appropriate.
skip church camp and wear what you want. you don't need people telling you how to think, you should figure it out on your own. check out: www.ffrf.org