We have a babysitter booked for a Christmas night out. Another couple have asked if we can have their child overnight with our 2 children and they will pay a third of the cost. We have done this before with a different family and it worked fine.
We will both have a child away that weekend so we'll still have 2 but they will be child-free. I suggested that they have the babysitter and the 3 kids at their house but they said they'd find someone else. I don't want to look after someone else's child with a stinking hangover! I also think that with no children at home, the other couple will go on partying past midnight (possibly with my husband!) while I go home to relieve the babysitter. This means they probably won't collect their child at a reasonable time, which the other family did.
We have no family nearby and have been away from our children overnight probably once in a decade so it would be a very welcome treat for us! I don't want to be petty but I feel like I'm being taken advantage of! AIBU?