As pips said, do your research on the company.
One thing they may put to you is that you're away from home a lot going to some some very "out of the ordinary" destinations unlike many airlines that fly to the more popular destinations, so how would you feel about it? I would say, look at their route network and see if those places are for you - it's something to take into account.
I don't know what the interview format is like now, but I'd imagine it'd pretty much be similar to the other airines, but dress to impress, smile, be natural and give examples of customer service etc.