I have 4 kids too-- and yes, we need to book 2 rooms...... offsite we once got a suite that was huge (Holiday Inn Universal). I think that room slept 10-- 2 BR with 2 Queen beds in each, plus pull out couch in living room. But now we go for the onsite experience, and the front of the line passes. With 6, you need 2 bathrooms anyway, so 2 rooms.