In my limited experience, it depends on the time of day that you play. If you play during somewhat normal hours, it should be pretty tame and enjoyable (provided you are winning). However, if you play into the early morning, it can be another story.
A couple of weeks ago, I was playing at the new poker room at Caesars in AC @ 6am and actually left the table b/c it got so bad. On my table, I had one guy calling another a F_g, a Jesus freak preaching to me on my left and bitter 40yr old man sitting across from me who verbally abused every dealer who sat down, practically driving one of the more sensitive female dealers to tears. It was entertaining though and I left up overall.