[JMittl]

It's a donation box...no "need to" or "have to" here.

...not all have to donate. It's there if someone would like to donate to the park. Maybe it's someone traveling from out of town and absolutely loved the park and wanted to help the park with a monetary donation. There's nothing wrong with that!

I agree that ALL money left in a disc golf specific donation box should be used ONLY for the maintenance and improvement of the disc golf course.
I agree wholeheartedly!