Thinking about inviting one of DS's friends on holiday with us for a week. He would be 11 when we go, DS would be 9. We've got two bedrooms, so they'd just need to pay for flights and a bit of spending money.
He has stayed over for a sleepover and he has been on days out with us and seems happy and comfortable with those, also recently was on a school trip where I think they were away for 4 nights.
Perhaps it's a bit young, I don't know as DS is younger. What age would you feel comfortable with your DC being away with another family for a week?