Yeah, I can sympathize -- there are a couple of experiences I wished I had been able to make it out to a big event. One of my biggest regrets in life (and there aren't many of them) was that I decided not to go to a private concert Gord Downie (The Tragically Hip) was holding in Toronto. I was told someone could get me in if I wanted, but I didn't have the time I wanted to get myself ready and go out. This was during his solo career, when he was making his own music away from the rest of the band. It would have been me and about 14 other people in a small club -- my friend (the one who invited me) said it was incredible.
In the case of Atwood, I've been fortunate -- I've been able to see her speak three times (you can see my head in the left-side aisle (I'm in the vest and white shirt), three rows back from the front, at 3:36
in this video). I can't say I completely like the way she speaks in public (she does this thing now where she pauses after almost every line during a reading and waits for applause; it's just become annoying), but it's countered by the fact that she'll often ask people for random names, concepts or ideas, and if it's good enough, she jots it down on a scrap of paper that she stuffs in her purse. It's kind of hilarious.
I'm a big collector of her signed works, though -- both from a literary standpoint (I consider her to be the most accessible literary/speculative fiction writer in the country, even beyond Alice Munro) and a collector's standpoint (she's got tons of varied works to choose from).