It does seem DD's are easier to vacation with then ds's for some reason. I have 2 boys and 1 girl. Though the boys were more "attached" to me growing up, my DD is the one who still wants to go on vacations with us, and she is 28. IF we are paying.

My 16 yr old ds, no way, no matter what. My 30 yr old ds would go now that he is married, but only because his wife wants to go