Originally Posted by Cat Herder:
Or, you could do what I did and have the parents drop them off at the state park swimming area with a lifeguard on duty. I booked pavilions for the day (free with annual pass), packed meals and beverages. Ours had bathrooms, showers and handwashing stations. Parent drop-off and pickup was at the pavilion. All that was required were signatures on field trip forms.
I did the same at the skating rink. 
Movie theatre and library, we walked.
I know everyone here knows this but I just have to say it: You are amazingly resourceful!! I wish I had your creativity.
