Knott's Berry Farm Discount

While it is posted on their website, and I neglected to mention it on my TR, you can gain entrance to KBF for only $24.99 when you bring 2 cans of food for their food drive. 4 cans at Albertson's put us back a mere $1.88 for mixed veggies.

http://knottsberryfarm.com/public/admission/prices/deals.cfm

I'd assume that this will bring in heavy crowds, and make it an undesirable time to visit the park. Would this be correct?

My TR report, on a Thursday last week with 70' weather meant sparse crowds. My pics show an empty park. I had to wait for 2 stage coaches, 20 minutes. Biggest wait of the day.