Shrek and Fiona's honeymoon is an event that took place after their wedding.
Background[]
After Shrek crashes Fiona and Farquaad's wedding, as well as Farquaad's subsequent demise, Shrek and Fiona get married in the swamp. The honeymoon presumably follows the events of Shrek 4-D, where the couple ends up in the Honeymoon Hotel.
Event[]
Shrek and Fiona break into Hansel's Honeymoon Hideout and stay there for the night. Little Red Riding Hood comes to visit, but runs off screaming at the sight of the two ogres and leaves her picnic basket behind. Shrek and Fiona have a picnic on the beach, which is interrupted by The Little Mermaid. Shrek has the dwarves forge a wedding ring for Fiona. Later, they have fun outrunning and fighting off an angry mob in the forest. The ogres then have a mud bath, surrounded by Mud Bath Fairies, before returning home.