On the envelope, what is the formal or traditional way to address your invited guests? For example, if I invite a husband, wife, and their two kids how do I write that out on the envelope? P.S. this is for Save The Dates, the formal wedding invitation, and future thank you cards. Would it be totally lame to create "sticky" labels to put on all the envelopes instead of hand writing them out? I just don't have the best hand writing.