It really depends on the personalities in your family.
Part of my family is able to do five adults per room, part my family needs a room per couple. You know your family best, and what they like. When we cram in one room though, it is usually to get a deluxe room. It is harder to cram into value rooms.
With a group that large, I have found the dining plan to be a big advantage. whether you are paying for food, or each person is paying ther own way - haiving the bulk of it paid up front - generally - simplifies things- so long as EVERYONE is on the
DDP. Meals where half the group is on DDP and half is not are nightmares. (the trouble is that it takes FORVER to get TS bills settled.) We do the basic dinign plan. Everyone agrees to one TS per day.
It also depends if yor group is the kind where everyone is morning people, night people, do things people or sleep-in people. If everyone is in sync- thigns go more smoothly. You can't put a morning perons with a night person though....and other considerations - like who is sensative about room temps/light in the room, light sleepers, excessive packers....
If you go the five adults per room - we usually do - everyone has to be willing to accept a certain amount of compromise. If they can't do that, then go seperate. Mostly we tour together. I find it personally frustrating if part of the group arrives late. We've got FP for one attraction, they want to go on something we've already ridden....Much better to start each day together, then maybe split up for a bit before dinner, or take the small child on tame rides while the adults go on thrill rides. Also use (stroller) nap times the same way - or late nights. it's much easier if everyon agrees to a basic arrival at nine am each day. If they can't arrive on time - they don't get to demand certain rides.
I'm not a big fan of the villas. I think they are overpriced. I also don't want to cook at WDW. We've atually had better luck going deluxe. It's pricey, buteasy to coordinate everyone at a place like CR. At the big mods, you spend a LOT of time walking around the resort.
So let's say you go to breakfast. After breakfast everyone wants to head out - except that someone forgot an itme in the room (jacket, sunglasses, etc.) At CR tower rooms- it will take them ten minutes. At the huge mods- it could cost over half an hour!
Given your choices, I'd suggest value resort 'preferred location' rooms might be the way to go. Some villas are in convenient locations, some are not. Generally speaking - they are not as convenient as regular deluxe rooms,as far as how long it takes to walk to yoru room from the pool/food court, etc. They are more like mods. That's another reason why they don't appeal to me. But maybe OKW or SSR are better. Any of the resorts where the DVC is beside a deluxe have that problem.
At WDW, time is money- with a big group- that is double-true. You can spend a LOT of time waiting on food, waiting for everyone to use the bathrooms, waiting of folks to dry their hair... A preferred location room at Movies is close to the pool, close to the food ourt, close to the bus stop. Though I'd give Pop a bit of an edge over Movies.
