Will they allow all of us in even though half our tickets are kid tickets?
They will likely not notice because there are so many people, except maybe if you are a smoker and need to get your tix re-scanned... If not all 6 are smokers try to use the adult tix when you go smoking because the scanning lady might look at your tix (less people)
I got kicked out last year with a kid ticket. Years before, they weren't looking. Last year, they started putting "guards" (not only the usual usher) at every entrance on the Family Zone and they threw a lot of people out.
Don't know if they changed anything this year though.