Park capacity.

[Malcon10t]

I think that might have been 80,000 in the whole day. But something closer to 50,000 at any particular time.

Some confuse "attendance" with "capacity". Attendance is the number of first time entries. Capacity is what is in the park. So, when you first enter DL, it adds one to attendance and one to capacity. When you exit, it subtracts one from the capacity. On your reentry it adds one to capacity, but doesn't add to attendance.