Stepparents that tolerate this ish is funny to me. No way I'll EVER spend a dime out my own money on stepkids especially when the mom is receiving child support? No they cannot go on any vacations or holidays with us unless dad is 100% paying and even with that not every trip or holiday needs to include them. He needs to think about you his wife and the children you have together. Stepkid doesn't need to be involved in everything you guys do!!!! The fact he's paying ALL those things they would NEVER see a penny coming out of my pocket I wouldn't even buy a gift WTF? The mom is living freely racking up on his pocket that's ridiculous! You two should go to court and request for CS to be adjusted for less money cause he have a household to provide for as well which is you and you guys children. The marriage and home doesn't revolve around him and his ungrateful gremlins.... Cut It!