Yes, he should include at the end of the essay information about what he learned and if it changed him.
A Narrative Essay is usually told from the author's point of view. There are usually specific and often sensory details provided to get the reader involved in the elements and sequence of the story. So it would be highly important that Noam include information about his experience.
You should add how it effected him because that would make the reader want to actually read and it would give detail but make sure to put supporting details in the essay too ! :D
