As far as I know I will be around for any and all dates mentioned. On the April 18th date, I will bring my cheesy potatoes and on the warmer dates my potato salad. As far as how busy the park is on the 4th of July, I am afraid I can't remember. But I think most main "Findlay" holiday activities are at the park in town. And I think most "regular dogpark people tend to do other things on holiday weekends and the dogs get the weeknights. (It's hell getting old - you can't remember anything!)