POLISH CHIVALRY IS NOT DEAD!
Always greet females first, from elderly down to young. Many a Polish-American couple visitng relatives in Poland the first time has experienced this: they appear at the door and the Polish-American male extends his hand but the Polish family ignore him and start in hugging and kissing his wife, before doing the same to him.
When serving food or pouring out drinks, serve the females at table first.
Always sign letters, cards and e-mails from a couple: Alina i Jan Nowakowscy or
Barbara i Jerzy Szulcowie, etc. with the lady always first.