My all-time favorite Final Fantasy character: Vivi! And this next cutscene is his introduction! Other than that, there’s not much to the cutscene.
The scene does, however, slightly foreshadow future events. When Vivi is immersed in the shadow of the Prima Vista airship, it foreshadows Vivi’s inevitable entanglement with the bandits of the Tantalus. This scene, along with the next one, set up an interesting Marxist analysis for the next few scenes as we are shown the difference between classes in Alexandria.
Cutscene 4 is barely worth commenting on, but I will post it here in case I have missed something and for completionism. If you find something worthwhile, please comment!