MNSSHP is really fun! Everyone in family will enjoy it! It's good its not the first night if the party it will help to read those reports so you know where the special characters are meeting, what candy you can find where etc. i do recommend starting the party at 4:00. It seems like plenty of time but its all a blurr so have a plan and eat your big meal early. Also remember many places stop serving real meals for the night earlier than you would imagine. You'll find all info on the MNSSHP thread. Many people wear costumes which is great fun-just mind the rules. I wore my Jack tuxedo tshirt and Nightmare Micky ears -to my DD chagrin. I told her to be happy that i left my long finger Jack gloves in the hotel room
We were already in the park at 4 for the first party last year so i found a shortish line to get our bands grabbed the park map and goodie bags. Frankly the bags were big enough for us but some people bring there own bigger bags. Afterward we waited in line for Jack and Sally -you guys may not want to bother with these meet and greets but you'll be able to read whose at the party. Like we walked into Lotso in tomorrowland and he hardly had any wait to meet. Rides lines were indeed shorter even Haunted Mansion wasnt horrible and was a must for that night (really any night), parade was great watched it twice and the castle show once. We were one of the last ones in the park rushing to have some last rides on splash.
As far as BOG dinner ressies try the site below. I was able to get my perfect time evetually for O'hana dinner thanks to touring plans. It allows you to request two searches I did both for O'hana same night to cover all times that night. You'll see what I mean when you go on the site.
https://touringplans.com/walt-disney-world/reservation-finder
So from what you wrote I wouldn't stress about any more character sit down ressies
I know it all seems daunting but its good to lay out your days loosely and i would plan morning fastpasses if possible because that time of year after using our first three fastpases we were able to then get a forth fastpass at one of the popular rides rather than wait 30-45 minutes in line. DD was great at this fastpass game. After we swiped our magic band for our third fast pass she'd get the fourth set up.
Also when planning remember it is so hot end of August and you will need to take breaks at hotel pool or an air conditioned lunch. I brought a cooling towel that i cut lengthwise for me and daughter we used them on the hot afternoons when we were staying all day at the park. Animal kingdom always seems epecially hot. I brought a large gallon ziplock bag to keep my damp towels in my backpack. In fact baggies of every size are good to bring and keep with you. I also brought a Brita water bottle that i could fill with ice cold water at any soda fountain stand and when i had it out at a restaurant they were happy to refill it for me.
That time of year it is also very rainy so i bought those clear rain ponchos from walmart kept them in my backpack for the daily shower and they worked fine.
If the Jawas are still trading with guests near the Chewie/Kylo meet and greets i would recommend buying set of flashing plastic rings from
amazon ($12) so your kids can trade with them. My daughter was a big hit with those Jawas!
Ok sorry way off track from your restaurant question.
Your kids are great ages for their first trip- you will have such a good time!!! Just keep reading the boards and you will be an expert by August!