I went to Las Vegas last week by myself. Maybe it was two weeks ago, I have a hard time remembering stuff.
I took the Greyhound bus there. 8 hours from Arizona. Greyhound advertised free WiFi but the speeds were terrible. Check your email, but that's about it.
I went by myself because I don't have any friends anymore, and I don't like people. I mean I still want to have sex with human females, but that's about the extent to which I'd like to interact with folks.
Conveniently, the bus drops you off right next to the Plaza Hotel and Casino on Fremont Street in downtown Las Vegas. I love staying at the Plaza in particular and downtown in general.
Downtown retains at least some of the old time character of the old gamblers and dirty lifestyle that represents the true nature of Vegas. The strip is too sanitized with corporate feel good bullshit. Though in reality, either way you'll piss away your hard earned dollars in the casinos.