My advice would be to just sort of roll with it and have fun. When you get onto campus, keep your eyes open for recruitment events (as others have said, they may not be as widely advertised as formal recruitment would be) but also focus on settling into your classes, meeting new people, and having an all-around good time. Don't stress it.
Focusing on what what
could go wrong can sometimes cause things to go wrong. Sort of like a self-fulfilling prophecy - for example, today one of my coworkers was all, "I'm not going to be able to make any sales today, what if everyone comes in and cancels their orders, this could go horribly horribly wrong" and kept dwelling on it during his entire shift! When customers came in, they picked up on his negative attitude, and lo and behold - because he was busy worrying about it instead of actively trying to make the sales, he didn't actually get any on his own.
I know it's not quite the same thing, but the attitude you have going into this sort of thing is generally obvious from the get-go - and if you do have time between your arrival on campus and when your recruitment starts, and you keep a positive, upbeat attitude and show that you have a passion for living your life to its fullest (which it sounds like you do, since you've taken so many amazing opportunities already), it's likely that you'll be noticed in a good way, especially if the women in the chapters are keeping an eye out for PNMs, which I imagine they might be in a smaller Greek system. Don't quote me on that though - since I don't know your exact situation. At worst, you'll make a ton of new friends on your campus, and at best, you'll go into recruitment and when people hear your name, maybe one or two of them will say, "Oh, I had a class with her/I've seen her around/she plays ___ with my friend, she's always excited and upbeat, she might be a good fit!" Not that I can say for sure what they would say or do, but if you have time between your arrival and when recruitment starts, you can definitely use it to your advantage.
Make the most of what you have, don't focus too much on your negatives - especially in the case of being a "junior," since you're not really one with those credits - and be prepared to go into this with an open mind regardless of what you hear around campus. Recruitment, whether it's formal or informal, is an amazing experience no matter how it turns out - you get the chance to meet so many different women from so many different walks of life, and in the best case scenario you get the opportunity to have sisters and to be a sister to a group of amazing women.
Oh, yikes - sorry I rambled so much! Please keep in mind that this is just my two cents, and that as I'm not 100% familiar with your situation I can't give you any guarantees or say anything about what will and won't work on your campus with any degree of certainty. Still, I think keeping a positive attitude no matter what happens along the way will help a lot.
