I had worked for a hotel in Kansas on new years eve, when I was fired for no apparent cause. While not on the timeclock for the hotel, I was working for a contractor during a new years eve party put on by the hotel. I was accused of drinking on the job by my contractor boss, and tried to explain to him that what I was drinking was a energy drink called "Monster" which looks like beer in a plastic cup. I told him that I quit and went to walk out of the hotel. As I was leaving, my hotel manager fired me with no explanation. I was not on the clock for the hotel when she fired me, and no reason was given. Can someone help me with this, Is this Legal, or Illeagal?

Legal. You do not have to be "on the clock" to get fired and I'm really not sure whether you were fired or quit. In any case, I don't see a violation of any employment laws here.

I actually didnt quit the Hotel job, it was the contractor job that I left. I guess my problem is favoratism towards one employee with a blanket policy of no employee may use the facilities for any reason, while the manager herself and one other employee use the facilities (i.e., occupy a room, drink on the job). Is there any violation of anything in this?

No, the employer may have different requirements for different employees, as long as they are not determined by race, religion, national origin or other protected characteristic.