Ty Lee is obsessed with making all of them as happy as possible. She often makes special breakfasts, and cuddle sessions are essential. Zuko 100% believes everything she says about auras, and they discuss it often, because he is "Best Hubby."
Mai, Zuko and Azula all bond over judging people. Zuko sometimes gets distracted by how pretty they look when they're mean, so he just watches them judge others.
At parties, Fire Lord Zuko makes sure to dance with all of wives. Ty Lee is happy about it, Azula demands it, and Mai pretends she doesn't care but thinks it's cute. Obviously, the girls all dance with each other as well.
Azula is super clingy, jealous, and very protective of all of them. She also demands to always be the little spoon so she can feel loved and protected.
Zuko lets the girls have "girl's nights" when they want, and they respect Mai when she asks a little space. Zuko and Azula often make forts with pillows and blankets, and play games all night, like they used to do as children, as a way to make up for all the times they fought each other - Mai and Ty Lee join them every now and again.