3. Yes, get Memory Maker.
Memory Maker is worth the money, no matter what size group you’re traveling with. But it is a necessity when you are visiting the parks with a big group. It’s so nice to have access to those memories once you get back home—ride photos, panoramic (almost) PhotoPass pictures of the group in front of park icons (Cinderella Castle, Spaceship Earth, the Tree of Life, etc.) and photos from dining experiences. Your group is large, so it can be stressful if you’re constantly trying to remember to take pictures of everyone at every experience. Relax and let the PhotoPass photographers do the work. You’ll have the luxury of linking those pictures to your Disney account via your MagicBand. And you’ll have digital access to those great photos once you’re back home.