Looks like a pop-up beach tent with a front flap, for about twice the price. I've got one of those I haven't used recently. Maybe I'll repurpose it.
You're right. Not being a beach person, I had no idea such a thing as a "beach tent" existed. They are cheaper, some are much larger and would serve the purpose of a paint spray booth better. Thank you! Once again I learn something useful on this forum.