M.C.
If all you would be getting out of it is free childcare, I would not do it at all. You don't need free childcare. You stated that you wanted the summer for you and the kids to have fun together. Sticking them in daycare unnecessarily does not accomplish that goal. Right? Oh, don't become a slave to this instead of enjoying the summer with the kids! You can't get that time back. It doesn't sound like you need the job, but your kids sure do need you. I wouldn't give up the freedom for any amount of money. I'd tell them that you are so glad that they are pleased with your work, but you'll happily be back in the fall when school starts again.