Let us not forget these are jobs that require little in the way of skills, you can learn just about everything on the job. Dealing school is a 2 month and under $1000 investment for most, compare that to a 4-year degree. Dealers mostly do it because they love the atmosphere, not because it is necessarily good work. Top dealers make maybe 60k for the right shifts at the right places. Locals places and the best carpet joints are where the money seems to be. I have never been a dealer myself, but I have kept the numbers at some places and know a handful myself. I can tell you that most are just like the waitresses you find in any city. They spend every dime they got, they smoke like chimneys, they gamble a lot, and their income comes and goes all the time. It is a lifestyle more than a job. Half the people end up marrying someone they met doing the same job. If you are outside looking in, don't expect it to be anything like you think it is.
Best job is definitely parking valet, those guys make a ton of money, but at least they work for it. Head bellhop makes good dough as well. Pit bosses don't really make all that much as people think. The biggest money guys are the hosts, most of them ring up six figure checks, but they earn it. Most important thing to understand though is if you want to make a good wage in Vegas, best to work for something other than a casino. I got a fat bump in pay just working for someone else. Casinos expect you to dress impeccably, work a lot of OT, travel at times and in ways that screw up half your life...and they pay you bottom of scale wages.