I do know I wanna get ressies for:
Saturday-chef mickeys
sunday-???
Monday-Epcot Princess breakfast? are princesses at dinner too?
Tuesday-Magic Kingdom-Crystal Palace
Wednesday-DHS-50's primetime cafe
Thursday-Water park-1900 Park fare
Friday-Animal Kingdom????
Saturday-Leave
With 17, to me the biggest issue is the logistics. Two people can park-hop or resort-hop for meals a whole lot faster than 17, so I'd try to keep it simple.
Saturday - CM - good idea to start with the classics.
Sunday - any idea what park you will be at by dinnertime? Maybe see if you could grab an ADR at Ohana? It's at a resort and has monorail access from Epcot and MK. Make your ADR 1.5 - 2 hours before that night's MK fireworks and you should be able to see them from the restaurant.
Monday Epcot - Norway has wall-to-wall princesses for all 3 meals.
Tuesday MK - CP is good for any meal, although I like breakfast best.
Wednesday HS - 50s PT or may I suggest the Cape May buffet dinner? I prefer the food and you have both seafood and "standard American" choices.
Thursday water park - 1900PF is very fun and not just for the kids (assuming you mean dinner; breakfast is "English Disney" Pooh/Alice/Mary Poppins so sometimes overlaps with characters at CP)
Friday AK - Yak & Yeti to stay in the park or Boma for dinner since the park closes fairly early anyhow. TH is another option in the park but the characters are only at breakfast. Y&Y has really good food and is a sit-down restaurant. Boma has a huge array of choices that should appeal to a large group, plus the bonus of exploring the animal areas at the AKL as well.
I really would not recommend T-Rex, mostly because it just doesn't say 'Disney' to me. I'd go more with restaurants in the parks or at a resort. If you could fit it in somewhere (Monday?) I'd recommend a show like HDDR, but that costs 2 TS. You'd then have to pay OOP for another meal, probably a breakfast since they're usually cheapest.
