My new husband and I just returned from our honeymoon (we left just 2 days after our wedding) and are eager to get all of our TY's out! Of course, we want to send TY's to all of our wedding guests regardless if they gave a gift or not. What I'm wondering, what is the etiquette if someone sends their gift after we send a TY just for coming to our wedding? Is it okay to let them know more informally that we received their gift and appreciate it, or does etiquette call for sending an additional TY card?