Hi again, Amanda! Bummer about the tickets, but we can still make this work so you can get the most out of your time!
Ok, so to address the Extra Magic Hours (EMH) question: I checked the calendar again and it looks like you are referring to the evening EMH from 11pm - 2am. My first reaction based on the age of your kids was, "They'll be passed out by then". However, the Friday ones back up nicely to a pool day on Saturday (so everyone could sleep in) and the Sunday ones do the same with your departure day. I think I would keep both of those options under wraps and see how the kids are holding up as to whether or not you think you'll hop over there. Based on my experience and looking at the itinerary I suggested, I'd be more apt to go on Sunday. Epcot is so large that your kids will be pretty exhausted after IllumiNations on Friday. Sunday they'll know they are leaving the next day and you can head there right after the Animal Kingdom closes.
As far as other dining suggestions, I have a question: You mentioned previously that you arrive at 8am on the 22nd to check-in. However, you also have a reservation at 'Ohana on the 21st. Since you can't get your Disney Dining Plan credits until check in, is the 'Ohana one being paid out of pocket? If so, then based on a 5 night stay, you are still eligible for 2 more Table Service reservations.
I would recommend that you eat breakfast on Sunday at
Donald's Safari Breakfast at Tusker House in the Animal Kingdom. The characters are adorable in their safari gear and it's a great way to start your Animal Kingdom day.
I also see that you don't have anything booked at Epcot for the 24th. A few of my favorites (that my kids love too): Le Cellier, Tutto Italia, Teppan Edo or Via Napoli.
Hope this helps and let me know if I can assist further,
Kaylene