All the crazy you can handle!
Fremont Street is a great way to spend some time away from the strip, but still be entertained. They have ziplining, a fun light show every hour + tons of street performers/bands etc. It's a really fun time.
I will say it's not as fancy as anything on the strip, but that makes it more affordable. Bars/restaurants are all over the place and open fairly late.
I enjoy coming here because I can still do all the fun "Vegas" stuff but on a smaller scale for a bit cheaper.
Stay Cheerful ;)