When addressing rehearsal dinner invitations, the full name of the recipient should be used and all of the words in the address should be written out. Nicknames should not be used, and the appropriate personal title, such as Mr., Miss or Mrs., is to be included.
If an address is sent to a couple and they have the same last name, it is appropriate to write "Mr. and Mrs." in front of the male's full name. For couples with different last names, each person's entire name must be listed. If an individual has a professional designation, such as doctor, this designation should be used instead of a personal title.