I've taken the tour twice now, both times during the day, so I can't review how it looks at night.
It is even hotter during the tour than the actual Vegas temperature is because the sun is reflecting off the signs onto you. During the summer months be sure to wear sunscreen, sunglasses, a hat, bring a fan, or wear light colored or loose fitting clothes.
If you're an art major or a history buff, this museum is a MUST on your Vegas to-do list!
There are lots of really great photo opportunities.
A super cool, retro gift shop will eagerly take your money and provide you with branded merchandise out the wazoo, snacks, toys, even jewelry, and all sorts of random goodies!
Don't just show up, you must book in advance. Evening tickets are more money. Vegas locals, young kids, and college students get a discount.