^^^Yeah, that's one reason there was a lot of jockeying, frankly, to get your's scheduled first and I think that led to some uhmm "pressure" put on the guys winter term (since their candlepasses/pinnings are normally in the spring), to go ahead and ask already, so they could get the "good" dates nailed down.
Actually, picking a Monday (their chapter meetings) to do it was the most stressful part of the whole thing for her (Didn't want it the Monday after a formal or a weekend retreat. Didn't want it on the Monday of midterms week. Didn't want it on dead week or finals. Didn't want it near a big philanthropy event for her sorority or his fraternity.) In other words - wanted all of the attention entirely on HER event, so it was tricky.
Their pinnings were supposed to be a big surprise, but in reality, there was A LOT of time that passed between when the guy asked and when the pinning took place (almost two months in her case), and the girl asks four friends to speak for her - the guy has four friends speak for him, so.....word got out. Plus on their campus the guy is a senior and they usually have been dating a while so that narrows it down a bit. I think she's known every time they were going to have a candle pass and who it was or she at least had a pretty good idea.
They never did 2 candlepasses in a night (that would be hard to be girl number 2 for that), because their pinnings involve a lengthy ceremony (sometimes 2 hours long) after the candlepass and a BIG party all of which is done on the same night, so that was never an issue fortunately.