Signs and blackboards are a great idea for your reception! They are actually becoming a must have on your wedding day. They certainly help creating a cozy and romantic atmosphere and they enrich your reception set-up with a vintage and retro touch for your guests. If there are different areas in the venues you choose and you are planning to have the ceremony, the toast and the reception in different areas that is the right excuse to use signs, since they will also be useful. Also blackboards are very common for weddings, for example you can use it to write your wedding program on it, or you can use it next to the bar area to show what are the drinks options for your guests. Also you can use signs on your chairs (Mr., Mrs. style). If you are planning a rustic or vintage wedding you should definitely consider using signs!