There's an eye toward demonstrating professionalism and how importance it is to follow rules at work, but the overall messages communicated in the show are about partying and arguing.
Catty behavior is common between crew members. Occasionally the crew must deal with security issues and minor accidents, including fire.
Folks are shown talking their clothes off down to their underwear. Crude references to sex and genitalia, some of which is bleeped.
Some crew members swear like sailors; words like "damn," "piss," and "ass" are audible while "s--t" and "f--k" are bleeped.
Apple computers are occasionally visible.
Some folks smoke cigarettes. The crew enjoys drinking (beer, wine, champagne, hard liquor); drunken behavior leads to passing out, breaking rules, and irresponsible behavior. Guests sometimes bring illegal narcotics on board (the alleged remnants of which are visible), but face negative consequences as a result.