Well, for the legitimate large families that could prove or show that they had more than 10 in the past (whatever that system was) I'm sure the same system will cover the 8-person limit.
Based on my experience in 1500 and 2000 loops over the decades, the abuse of the 10 person limit comes from people who (as an example) come in for a nice spring/fall weekend and don't go to the parks. If the reservation just lists a few parents (and the kids ride in with mom or dad through the returning guest line and mom/dad use their approved MB), the kids can swim, ride bikes, drive the family golf cart, and run wild/loose all weekend long.
If the kids/parents DO have passes or park tickets, they could still use the transportation, get into the parks, and come back to the Fort for food/sleep/frolicking.
On paper it sounds like a new policy that will cut down on overloading.
In practice, it won't change a thing IMO.
If those people were smart, they would not call attention to themselves by 20+ people on the campsite at mealtime, the deep freezer to hold all their food outside the camper, and multiple cars squeezing off the pavement.
If those people were smart, they would not call attention to themselves by staying up late with loud music, activities, pets, and draw the ire of the rule-abiding guests around them.
If those people were smart, that is, then they could get away with it easily.
If.
Bama Ed