Wizardy and the Dunning-Kreuger effect

Just read the free sample of a book Clear as Crystal
https://www.amazon.com/gp/product/B0B6GZSZ2M/ref=kinw_myk_ro_title

The prologue is "how they got in this mess" and involves person who is the classic "everyone is against me, these things that happen are never my fault" who (as we learn) has a bad case of Dunning Kruger.

So he wants the power to make wishes, and manages to get the materials and successfully cast the spell. The being summoned tries to tell him why this is a *really* bad idea, but he just thinks that it is trying to trick him.

Not only are the results catastrophic, but the author does a wonderful job of showing how and *why* things blow up on him.

And then the story starts...

Looking for ideas.

Two things.

First, I want an area outdoors and relatively "natural" looking. Size between a baseball diamond and an American football field. Need a way to keep "weather" out. At least breezes and moderate winds, rain/snow/hail are unlikely to be doable.

Needs to be current or "near future" tech. Also need to not impair visibility in either direction, and still allow physical access along almost all of the perimeter.

Only thing I've come up with is some sort of "air wall" (like some stores use at their entrances) or a modified "air blade".

Problems are power consumption, noise and that if it's strong enouggh to deal with even moderate winds, it'd likely be strong enough to not be fun to cross (especially since the area is clothing optional.

A breeze blowing "up your skirt (or lack thereof)" is bad enough, but *this*?


Second.

A material that is both transparent and *non-reflective* when inactive. When active it can absorb any frequencies of light from IR thru UV (Selectable) and convert it to electricity with high efficiency.

Question here is how possible something like that would be.