Governor Sisolak, observing the recent alarming spike in Covid cases in Las Vegas, said he is seriously considering a return to a higher level of restrictions if the numbers don't get better very soon. He said he'll decide within two weeks, maybe sooner.
So this could mean one of two things for your upcoming Vegas jaunt:
1. Everything will be shut down again, or at least restricted so much that it won't be worth going (IMHO, the latter state of affairs already exists).
2. It will be that much more dangerous to be among crowds of people, many of whom (still!!!) aren't wearing masks and do NOT practice social distancing. This one depends on how much you care about your personal safety and that of your family, I guess.
I would imagine that flight and hotel bookings are easier to cancel than they were before, but I would recommend just pulling the plug now. It ain't worth it.