Sending a save-the-date is not a requirement. While we suggest it so that your guests are given a heads-up and you will be better able to plan, it is not against the rules of etiquette to not send a save-the-date.
HOWEVER, if you do send one, don’t forget to include the city (and state/country) in which the wedding will be taking place! It gives out-of-towners a nice heads up and helps you to avoid hearing the question, “So where is the wedding?” a hundred or so times!
Check out these super cute save-the-dates with the location as the focal point from Oh So Beautiful Paper!