Assuming airlines don’t start allowing passengers to tuck children into the above-seat bins anytime soon, you’re going to be stuck with the kids during your flight. OK, perhaps “stuck” is too strong of a word. More like, THEY WILL GLOM ONTO YOU LIKE KRAZY GLUE. And you will wonder whatever possessed you to go visit Grandma in the first place, even if you did get the tickets through reward points.
Unless, that is, you come up with some foolproof strategies to keep the kiddies well fed, happy and amused. As the saying goes, a little plane prep is worth its weight in packets of pretzels (or something like that).