a couple of things:
* Dues -- Dues may be more at one chapter than at another because it may include things like t-shirts/party favors/etc that a chapter with lower dues does not. Also, it might just be that the one-time fees for initiation are higher and the semesterly dues are the same or close to it.
* Timing -- You mentioned at Birthday Cake Remix that everything seemed on "point" and that you could probably find a pattern if you had a watch. I wouldn't be worried if I were you. My chapter used to time everything, and everyone knew who they were "bumping" so you could get to know another sister and so on. I don't think it has absolutely anything to do with you, so I would not take it as a bad sign... it's just how that chapter practiced recruitment and the rotations for each round. Some chapters are more coordinated than others when it comes to that. (And that's not to say other chapters are less organized or anything, so please don't take it that way either! Maybe that chapter you spoke with just had a system in place so they could get to know as many pnms as possible and the pnms could meet many sisters

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* Founder's Favorite -- it is definitely understandable ifyou didn't feel a connection there. Believe it or not, the "Rushers" are just as nervous as you (which might have explained the nervous wandering eyes or lack of conversation)! The ones you spoke with may have been really nervous... maybe it was their first time on the "sister" side of recuitment? Maybe they just really can't carry on small talk? Who knows. If you end up having to go back again, keep that in mind