I haven't tested it yet, but I have a whole Amazon wishlist full of possible perfect amusement park clothes. It's become more acceptable to wear workout gear to non-workout venues (and I really don't work out), so I was kind of thinking something along those lines would be perfect. There are several options for shorts or workout leggings that have zippered pockets. Some place the pocket right at the top in the back, so you could be stealthy in parks that still force you to use lockers. I was thinking about trying these first: https://www.amazon.com/dp/B074S2KSYB/?coliid=IBHG24MYLW5EZ&colid=3BI1A3XQGHEJL&psc=0&ref_=lv_ov_lig_dp_it

I was also thinking about trying those tops with built-in bras since they tend to be moisture wicking and would be a lot more comfortable than wearing a bra to a park. As far as shoes go, I was thinking about trying hiking sneakers that are designed to quickly dry. I never skip the log flumes and such, so this would be pretty great.