Depends on what you like to do, if you like to party and be all up in the videos you're probably not going to be doing much of that solo unless you're dropping big cash and I mean BIG cash because clubs don't want a solo guy in a booth unless he is paying up the ass for it and even then they might not be down. If you don't have a table in Vegas don't even bother going to the club, go to some random lounge at your hotel instead.
If you like trolling for sluts you're in luck because I've found it's actually easier to do that solo in vegas. Less interference all around.
If you want to lay at the pool all day you're good too but have fun with the old people and kids, every pool in vegas has turned into that. Or you can be the weirdo by himself at the pool party, have fun with that.
If you like to gamble, eat and see dumb fake shit you're good there too.
Pretty much you're going to wake up, eat, go to the pool, walk around aimlessly for hours afterwards seeing random fake shit and then go to a bar at night and be the weird guy by himself. Nobody goes to vegas solo unless they are "working" there or degenerate gamblers.
Honestly I wouldn't go to vegas for a solo trip, there really isn't much there everything is fake in vegas and you're not going to see something special there or make some cherished memory. Vegas is good to go in a group of debaucherous animals who just want to party, or maybe to take your chick to see dumb shows and eat sub-par food they try to convince you is special. Last couple times I went to Vegas with my friends we came to the realization that it's kinda become all couples and families, it's not even like it was only a few years ago when EDM was the big thing. Mind you I'm a degenerate gambler so I'm getting everything comped pretty much anywhere even my flight so I didn't miss out on anything, Vegas just isn't what it used to be. Unless you're getting comped it's cheaper to take a trip to Mexico and stay at a 5 star all inclusive resort when all is said and done.
Go somewhere tropical where there is real beauty that you can admire. Nothing to do in vegas but watered down partying and gambling now, you can fuck anywhere.