I see all sides to this...my daughter's HA can be not very obvious (esp when she's wearing pants and at night), so we have a used a GAC (though mostly for stroller as WC up to this point). One trip, my parents took their 5 grandkids- and had 3 4 yr olds, including my DD and they WOULD NOT put 7 on the card. Now, given the whole "responsible party" is age 14 thing, this would be putting them at odds with their own policy, so I agree it should be flexible for certain situations.
Skip ahead to April of this year (we were there the day they "changed" the GAC policy at DLR). Didn't notice any issues our last day there at all, but was told about the discretion to go above 6 for GAC.
Skip ahead to a few weeks ago- what a RIDICULOUS set of circumstances. Repeatedly, esp in FL, groups of 11 and 12 trying to do the HA.
Now I see the BIG downside of issuing huge GACs parties. I am thinking, when it comes to wrangling kids in one group- fine. But when the group is 95% adults, come on jerks, knock it off!
I saw the same thing as a PP- huge groups, one or two kids, strangle-holding the tiny HA queue's in FL. I mean, creating a seriously impeding backup to both entrances and exits of lines (think Alice/Toads/Storybookland). At Dumbo, and Casey Jr, and Storybook, I had to get vocal and point out that there were already HA parties ahead of them, please, don't stranglehold the exits!
If I see this again, I may give feedback to Guest Services, just urging the CMs to feel free to use as much prudence as they can with going big on the GACs. Maybe they should redo the cards and explain that the parties may not always be able to experience everything together. I say that VERY hestitantly, because I've also decided 3 times NOT to do Knotts Berry Farm because of their VERY restrictive, WC + 1 other person only, policy. As long as it's MOST of the time, or that PARENTS/guardians can always ride iwth their CHILDREN, ok. But these huge parties of adults aren't working well. There is not the space to handle huge groups.
Also, in April and in June, both times I had to initial the GAC and also, both times it was highlighted (the part about not intended to bypass wait times, except for .. of course the one stamp that is... but whatever...)