It doesn't help you but it's crazy that some studios you can put 5 people in, but the two bedroom is upto 9. I'm not sure if there is enough oxygen in some studios for 5 people.
We did a trip like yours in the spring. Took DD and DDil and 6 grandkids ages 4 to 15. Grandma and grandpa (us) had a studio down the hall. The kids had so much fun. It was a joy for me to see all the kids squeezed around the table eating.
You didn't ask for tips, but for that trip, because the 2 bedroom has glass glasses, we brought along take and toss cups with lids. Kid 1 has green, kid 2 had blue, etc. You could make labels at home if you want. Also for the parks, first day I bought water bottles for everyone. They got thirsty then water got warm, or spilled, or bottle flipping. Next day I bought little paper bathroom cups, Open bottle, everyone get 2-3 oz, open bottles as needed. No more wasted water or keeping track who had which bottle. And the rest of the bottles stayed cold.