are you referring to onsite?
if onsite, the only resorts that hold 6 in one room i would assume are the suites in Art of Animation and All Star Music and the 2 bedroom suites in the DVC properties (like OKW, etc.)
as for phone - it depends on the phone service you'll be using in the US.
i can tell you that T-Mobile has really bad coverage in all of the resorts we've stayed in.
It was fine outside of the room, but inside the room, there was zero coverage.
Probably AT&T is better. So you should check which company you'll be using when you're there.