Pinkie told Granny to let Applejack drive. Granny huffed and said "fine."
As Applejack drove, Pinkie talked to Big Mac and Applebloom about some random story in Sugarcube Corner. Everyone laughed and had a great time rafting down the river.
Now there was another problem. There were three separate passages to take. While the Apples tried to think of a solution quickly, Pinkie was fixing her scrapbook.
Time ran out and AJ accidentally turned the raft into a cave. This cave was the scariest cave in all of Equestria, so as they were all screaming. Once they got out of the cave, everyone was clinging on to each other while Pinkie was smiling as if she was just throwing a party.
When the Apples looked at Pinkie, they were confused, but didn't bother questioning it.
On the bright side...