Bosnia is a Muslim country, but they seem rather Christian-tolerant. And they do drink. The beer in Sarajevo is very good. Vodka, slivovitz, wine .... no problem.
Situation is a little weird in that they brought in a lot of mujadehin fighters from far less couth and a whole lot more unfashionable parts of the flyblown Muslim world, many of whom like sophisticated Euro-style Bosnia just fine ... but they try to rigorously enforce all kinds of strict Islamic practices for which the Bosnians don't seem to care. Naturally, these jihadis are dirty horn-dogs who do not take kindly to a simple "no" from the super-pretty liberated Bosniak womenfolk.
Might be much much more to this school trip than meets the eye.