You have a terrific opportunity to NOT stress! With that many children, getting off the plane will take a bit of coordination, so I would simply wait to deplane last....will take a bit of time. You don't mention how old the kids are, so you can adjust to fit, but this will give you some ideas....Do your head count/buddy check, and then do a follow-the-leader style leg-stretch to the monitors to "check" for you next plane. Let the kids "find" it...should take a little bit more time than you seeing it. Continue the follow the leader-what do you see thing as you
stroll to the area of the next flight, or the central hub, for your meal. Will you need a bathroom break on the way? Expect it will take a couple minutes to be seated and eat....linger...maybe a "treat" after lunch, either at the same place or to string it out a bit more, change locations. For a treat, I would either look for ice cream or something that takes a bit of time to eat
OR I'd try the magazine store and let the kids [depending on ages] "pick their treasure"...give them $5 [or what fits the
budget] and let them pick a treat...lots of options = time to make a decision. Regroup and "share" what each found [show n tell style, not literal]. Follow the leader to the next gate....is another bathroom break needed? Once at the gate, maybe have a story book of some sort to read aloud [little ones love story time] with their snacks....it will be time to board the plane again before you know it. If too old for the book [heck, I still like to be read to!], maybe disposable cameras and have them find something unique in the area around the gate....or a travel sized game like pictionary or other "group" game....IMO the key is NO RUSHING! Even if you "can" move fast, don't....it will help everyone stay relaxed. Good luck!