It shocks me that we use to go to wave pools like these for elementary school trips. They never even asked us if we could swim or not. I was at least a passable swimmer, but even so, it was so crowded that I remember a couple times getting stuck under the water briefly trying to find my way up between all the feet and inner tubes.

Wait

TFA is like 90% a copy of whatever the PDF is on this website. It just prefixes it with a small story

Yeah it's public domain, originally https://mariovittone.com/2010/05/154/