So I know that the adcom meets tomorrow. I was always told to wait a week before sending thank-you notes. I just sent mine to the Director of Admissions as instructed; do you think that they'll reach my interviewers before they decide?
I'm pretty sure the ADCOMS meet on Wednesdays, unless it's different due to the holiday on Monday. Also, the thank you notes won't matter. Maybe just for your own comfort, but the thank you note isn't going to sway your interviewer's analysis of you. So even if you don't get a chance to send it, it won't be a big deal.