FYI, if you didn't know already, but Adventuredome just recently opened up the new Nebulaz ride. It looks fun, been wanting to go on one!
Not sure what's open and how Vegas is running during these times, but if they are open, try to hit Zac Bagan's Haunted Museum (expensive, but very worth it, believer or not) and The Mob Museum in downtown, which holds 4 stories of surprisingly well-curated exhibits, and a "speakeasy" in the basement. Was way better than I expected it to be... it's a bona fide museum, not just a tourist trap.
Stayed at the Flamingo ages ago... it was so-so, but I'm sure a lot's changed since then. And the LINQ and all the food right are right there (recommend the Gordon Ramsay Fish and Chips right there).
Area 15 looks cool based on what I've seen so far. I'm personally waiting until Covid is over and I can have the full experience.