After changing into reenacting gear, cycling shorts or swim trunks in parking lots using a beach towel for 30+ years, I can see that a lot of people would be interested in the product - even as just a 'portable changing room'. A towel tends to slip at the wrong moment, and some old lady goes to the event manager and complains...or takes a picture and shares it these days. Is there a longer version for women to use around the shoulders, or is it purely for those of us who can bare our chests without someone calling the modesty police?
It does seem like a feasible solution for large group or public campground situations, even if it's sort of difficult to get the shower wand or washcloth in to scrub up.