As a native to Las Vegas I have seen the Bonanza (supposedly world's largest....) Gift shop 3.8 million times in my life, but also as a native to Las Vegas I have never actually gone inside. It's pretty much the weirdest thing two Las Vegans could be doing on a Friday night, but spontaneity took over on our way to Luv its for custard (which is as "local" as you can get, so that counteracts our charlatan tourist expedition). It's exactly as you would imagine it to be.
P.S. I bought a tiny cactus.