Same here. I quit my last vacation job after two months instead of spending the full three months there.
My colleagues would get me involved in the politics there and tell me bad things about others behind their backs. And later on, I was to discover that others were spreading totally unfounded rumours about me and were saying bad things about how I was snobbish and so on just because I'm a university student on vacation.
I swear to God, I did not try to be snobbish/condescending/arrogant to anyone, and there were thankfully others who saw through the backstabbing and treated me nicely.
The pay was good, but I decided to quit the job early. No point going to work every day feeling sucky because of all those politics.
