Not surprisingly, I went to college with people of the Arab race, the majority was Muslim.
Since I schooled with the same ones for more than a few years, religion often entered our conversations and the philosophy of each. What I learned is that the practice of is not that far from Christianity in having many different types of Muslim. Some of my classmates were strict, others not so strict - I regarded them as "Muslim-Lite" insomuch the same way you won't catch a strict Baptist dancing but it is 'allowed' under other Christian philosophies.
Fact is, some of my Arabic classmates were my drinking buddies (Lite), but others were non-drinking buddies (for religious reasons) where we would all hang out from time-to-time, some drank, others did not.
The ironic bit is, the non-drinkers never said anything to the drinkers - but I never missed the chance to give them total hell over it in a big laugh at how our American press defines a Muslim. In discussing this point - it seemed it was pretty much religious tolerance as we do within Christian sects, here. When asked - the response was that this is pretty much how it was back home. For instance, back home for them - they had dance clubs that served alcohol - some drink there, others do not. The only difference was the cover charge was higher (in respects to the US) because the business owner did not make profit off alcohol sales.
In my opinion, just like some Christians believe certain parts of the Bible, choose to believe the parts that benefit them or they need something to believe, it is the same in Muslim cultures.
-dK