Maybe I’m a little old fashioned in this area.  I don’t know.  Getting a hand written note will literally bring a tear to my eye.  All this texting and technology has taken so much of the human element out of what should be very personal interactions.  Typed thank you cards??? I know it’s the quick way to do it.  Have all the thank you cards pre-printed, sign them and just drop them in the mail.  I’m not judging you.  I’m just saying.  The people in attendance didn’t take the quick way.  They were thoughtful in their scheduling and they found money in their budget for you.  You need to say thank you appropriately.