dragoner
KosmicRPG.com
@dragoner What genre is your game, out of curiosity? What you briefly described makes me think it is a modern game, which in my experience lends itself better to players acting like real people because they are closer to it.
It is modern SF, year 2211, using a hacked Classic Traveller: Fusion Rockets and no easy Anti-Gravity. They are on a planet Pryp'yat orbiting Delta Trianguli, and they have used the resort as home base for a variety of adventures: going to the black market, navigating a corrupt bureaucracy, and pulling off the great monorail job. Against a background of revolution, sort of like Batista's Cuba.
The players did sign on for what I called a little harder sci-fi, that might have something to do with it over the bog standard space fantasy. In any of these games, there is the challenge of realistic behavior, fantasy it is probably easier to camp out. In the game I'm running, the player's have been more violent than one would consider reasonable, which is also sadly normal for RPG's. I know someone who was running games at GenCon, and they presented a choice where one had to choose to kill innocents or suffer significant penalties, and people almost always chose to kill the innocents.
I will sometimes throw in "downer" descriptions, such as when looting corpses, have the player's find a photograph of the trooper's wife holding a baby, with "Come home soon Johnny" written on the back, as a reminder of what they are doing and who they are. Takes the sting off a TPK though.