Don't charge to visit the park.
Why is this important?
My local park is Roundhay Park. If you do this many poor families from the deprived areas such as Harehills will not be able to visit the open fresh air spaces and children's playgrounds. It is too far for them to walk especially with small children and baby buggies. Many multi ethnic communities visit this park.
South Asian for the cricket, Black communities enjoy the football and rugby areas.