I have seen bits and pieces of address etiquette but I'm having a hard time trying to compile answers to all of my particular questions. To clarify, this is for writing the address on the envelope, I think I've got proper invite wording under control.
I know for invites you shouldn't use abbreviations for road, street, etc. Is this the same for STD, or can they contain abbreviations since they are less formal?
Also, should they be addressed to people's full proper name or are nicknames ok?
Finally, married couples who do not have the same last name? How would that be formatted?
Thanks for the help!