Other players had reported that they were unable to marry in the first year in Grand Bazaar. In my own first file, although Bachelors were at Orange Heart early in Winter in the first year, it was only on the first day of Spring in the second year that Freyja received a visit from Ethel and Stuart when she re-entered her house.
??? Are you home, Freyja?
??? We're coming in, dear.
Staurt and Etehel enter.
Sorry to bother you, but it's very important. I'll cut to the chase. (Ahahn...) You're in love, right?
Ethel: Don't deny it. It's written all over your face, dear.
Stuart (ha ha ha) I knew it! We're so good at this.
Ethel: Tee hee.
Stuart: You're thinking about proposing, right?
Start: We brought you something to help out with that.
Ethel: It's a blue feather. You give it to some one to propose to them.
Stuart: This is the one I gave Ethel. It certainly brought us a lot of happiness. Just make sure you give it to the right person.
Ethel walks to my side slowly and presents me with a Blue Feather, then returns to stand beside her husband.
Stuart: The feather won't do it all. You have to have a good relationship with the person and their friends and family.
Ethel: I'm sure you can do it, Freyja.
Stuart: Well, we'll be on our way now. Good luck!
Freyja (with music)
The fact that both Stuart and Ethel pass on the Blue Feather that made their own marriage possible is rather charming. Note that Stuart clearly states that 'you have to have a good relationship with the person and their friends and family'. The specific individuals who must have at least three hearts when you are courting any Eligible Girl or Bachelor is included in my Courtship and Marriage Guide.
Later: Thanks to the player who reported that Stuart and Ethel made the visit at zero Hearts. The only requirement then is the traditional Harvest Moon requirement that at least one Bachelor or Eligible Girl must be at Orange Heart Level in order to obtain the Blue Feather.