Here is how The fun for the week and Hiro and Luna returns goes in Stayin' with Celestia.
The week later.
Hiro: Hello, Yuna!
Princess Luna: Hello, Yuna.
Princess Yuna: Hi, Mama! Hi, Papa!
Snowdrop: Hi, Hiro, Hi Luna!
Dusty Crophopper: We're glad you two are back!
Princess Luna: Did you two have fun with your Aunt?
Princess Yuna: We sure did, Mama! (winked)