I had the same fabulous experience many years ago in Wilmette, Illinois.
This an example of a very low-tech, low-price, high impact adaptation.
Anyone in a chair who has struggled in the sand would appreciate this simple accommodation. I have no idea why this is just the second time in 20 years that I have heard of this.
I encourage everyone to forward this article generously. Heading to the beach, or wherever you want to go, should be a fundamental right sort of thing. Awareness can lead to change!