mgd,
I applaud your endeavour to learn how to fit in - equally though, beware being over zealous with this new found knowledge.
It has been quite some time since I lived-in but I still remember the irritation of having visitors (often, but not by any means exclusively, VR(T) officers) complaining about 'un-officer like behaviour' - usually after witnessing a boisterous happy-hour.
Perhaps most importantly, remember that you are a visitor and that others live and work (usually very hard) in that environment. You may witness some young men and women letting off steam like you have never seen before - this is sometimes (though admittedly, not always) the result of some extremely stressful experiences and is very important.
That you have the courtesy to ask leads me to believe that you will have no problem. Hopefully, your colleagues will also benefit.