if you are a hot chick with big boobs they will put you through dealer school. Other then that you can pay for it yourself, dont expect to start off at the wynn or venetian though....you will get a job, but at a low end casino and in a few years work your way up to the big leagues and make great money (70+) but you have to deal with every asshole who thinks his 15 dollar blackjack bet makes him a whale and he can blow his cigar smoke in your face and talk all the shit he wants and you have to take it..
thats the reason I didnt go that route.
Casino security, as already stated, simple but you do have to deal with bullshit stuff...domestic stuff, drunks, depending on the casino and if they have a nightclub, fights and lots of them (again, depending).....pay isnt the best and you arent in a postion o take tips although a little customer service goes a long way and when people are surrounded by employees that are always pissed off and you take some time out to actually walk somebody to the bathroom rather then just point then sometimes you get a hundred dollar handshake.
I wouldnt expect to just walk into a major casino w/o any prior law enforcement experience and do security though....from what ive seen you have to work your way up also.