Recalling that moment when you first see him, your mind would suddenly produce several questions that somehow you find hard to find any answer to. Not unless you do get to really meet this guy and get a few answered. I'm sure it can be attraction or plain curiosity that will push you to take that second look.
Don't be afraid to do something out of character especially when you're an alien to a place or situation. It's taking that chance, which will give you that opening big enough for you to say if it's something worthwhile. May it be that you approach him and strike up a conversation or he comes up and talks to you, just let it happen. Imagine the possiblities.
It is true that the best way to go about this is by being yourself. There's no harm in letting him see who you truly are. I know it's sometimes difficult because you'll probably be thinking that he wouldn't like you. Perhaps he wouldn't like you that way you want him to but you might get a friend out of this situation. Why would you want him to get to know someone who you're not? Even if he does like that person, it'll be tough keeping up the act, won't it? Well, it's not the end of the world if he doesn't like you. Believe me, if that is the case then there's something about that person that is not worth any extra effort.
It's true that strangers will remain strangers unless each would open up and let the other into their lives. Remember that it's a risk that you're both taking. So, it's wrong to think that you're in a more vulnerable position. This is not a contest after all.