Little late into the semester, but am potentially doing informal recruitment with a fraternity... Tips?

I have found everything there is to know on the internet about formal rush, but I'm a transfer student to a large state university and am finally acting on an old ambition to join a fraternity.

I ended up in contact with a very large one on campus, and am meeting with a few of their brothers tomorrow to learn more about them and see how we get along. If anybody has any advice on how to approach this or anything I should know going into that might not be obvious, I'd appreciate it.

Be yourself, follow your heart, don't pee into the wind... anything more specific about what to expect would be awesome though.

Thanks men.