Today is the day. We'll be leaving to drive up to San Jose in a little less than an hour and when we get there, my wife will have her interview for citizenship. I can think of only a few days more appropriate than Voting Day (a month ago would have been better - my wife has already expressed regret that she's so close to voting and won't be able to) to do this.
I found out that many offices don't do same day ceremonies (including this one, sometimes), so it may turn out that she successfully completes everything and still has to wait. That's kind of a bummer. It could be as long as a month before the ceremony. We're taking the camera anyway, just in case.
Wish her luck! I'll be back later to update!