I always parked behind Playzone (St. Andrews Close) and I parked in pretty much the same place for 12 years (admittedly on a yellow line but was tucked up against a bush with plenty of room for people to get on and off driveways, get past etc and others parked in the same area, too) then when attendances started going up in 2016/17, the traffic wardens came out and I got two tickets in two weekends (first one was the Brighton FA Cup game).
They were no-where to be seen whilst we were in our other NL seasons. As soon as they sniff an opportunity, they're out.
People risk it, though, because it's too expensive to park in car parks and space availability isn't great either, especially on Saturdays.