Go through the story quest stories, help NPCs, fight for first place in the rankings or buy your own house.
One of you maybe will take over the board of the server and lead the company in raids, someone will be a good trader with the players and will be rich, someone would like their company or guild to go through dungeons and share loot among yourselves.
It's a nice day to try it out with your couple, make new in-game family and fight against other people or build good relationships, it's your choice!