If there's one piece of wedding etiquette advice we can give you, it's this: Always send handwritten thank-you cards to your wedding guests. Turn to our must-know tips for keeping track of presents (this includes engagement gifts, bridal shower gifts, and wedding gifts) and addresses and drafting creative and thankful letters—in a timely manner. While you're at it, send thank-you-notes to your wedding vendors, too: They worked so hard on your big day, and your appreciation means more than you know.