OK s, I'm qualified to answer.
I have a DP pass. I just spent four days at CP. Each entry, you go to the gate, show your DP pass at the ticket booth, and sign in.
If you leave the park, get a hand stamp.
I went to Valleyfair last year, and it was the same procedure. I can only imagine that Knotts and WoF are the same.
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Duane Cahill
I need a vacation to recuperate from my trip reports.