I have been to the Mob museum, DW hasn't. Will probably gamble a little (<$200 maybe) just to say we did.
I'd like to go eat at Golden Steer. Been there for work and LOVED it.
I know people have said to drive to Grand Canyon/Hoover Dam. Thoughts about an organized tour? Like this:
https://www.viator.com/tours/Las-Ve...ay-Trip-W-Lunch-from-Las-Vegas/d684-132218P75
We've never seen a Cirque show (even when we've been at Disney haven't made the time.

), so that will probably be one. Variety shows intrigue me, as do the magic shows. That's part of my problem, interested in SO much, but nothing that's "must do" if that makes sense.
ETA: Familiar with the monorail, and would probably use it more if we were staying in a nearby hotel.