Don't be dismayed by good-byes. A farewell is necessary before you can meet again. And meeting again, after moments or lifetimes, is certain for those who are friends.
Throughout my career, when I was finished with the drawing for one film I would go up to the story department and help develop sequences. Sometimes these were for scenes that I would animate later on.
The best part about the movie, and everybody seems to rave about it, is the boot camp part.