Several websites online say that you can get into the museum section for free on Tuesdays with a local ID. It is really that you need to purchase something to get that free admission. The lady that works there said that it was probably in the fine print. It isn't unless you see the tiny sign out front. Here is the website where it is very unclear and doesn't say anything about making a purchase before visiting the museum.
http://www.caesars.com/thelinq/events/linq-bloq-party.html
"Polaroid Fotobar: FREE museum admission ($5 off for non-locals)"
So, I did not check it out. I am not complaining about not getting something for free but I would have maybe purchased something or given this place as a recommendation to check out to other locals or when people visit if I was able to visit their museum. I thought that was the point of offering discounts like that to locals. But, it was crowded and tourists seemed to love it, so what do I know?