silly people, who pays for rooms when they go to vegas
Seriously though go online and sign up for the rewards club at the hotel you would like to stay at. In no time you will be receiving offers for discounted rooms, free play, etc.
Pick up your players card when you get there and remember to use it! Any tracking they can do on you will help you out in the long run. If you eat in the hotel put it on your hotel room and if you gamble while you are there at checkout see if they will comp you some of your meals. Always remember to ask for upgrades or anything, if you don't ask they won't give!