Everyone knows to write thank you notes to wedding guests that attended the wedding--whether or not they gave a gift or not. But let's not stop there. When you write your thank you notes, you need to send one to EVERYBODY!
When I say everybody, I mean:
If there was a human being involved in the process, it's a good idea to say thank you.
Also, despite the one-year rule of getting your thank yous in the mail...more and more lifestyle experts are saying No. It's simply not good enough. Everyone's busy, yet they eventually get done, right? So...don't delay the inevitable. Write them and mail them within 2-3 weeks after your wedding date. Beyond that, it starts to look really tacky.