I would go! I think that is such a wonderful idea, and a night where I don't have to cook?! Bonus!! I think I would feel left out if I didn't get an invite! However, I live in a very small town and all my "clients" are friends so far. They respect my contract and my rules but I have a personal relationship with each. My two small children are also in my care and all the daycare kids are their friends. My son is turning 3 next month and he wants all his daycare friends to come to his party, so they are all getting an invite. The kids at daycare form nice relationships together too, and are often each others only friends, I think it is nice if you could foster those relationships outside of care.