This is not a side-quest or an extra mission; this is necessary to the main plot of the story.
‘World of Final Fantasy’ Might be Square Enix’s Cutest Game Ever
Yes, the player HAS to do a few mini-games and other tasks merely to acquire a cross-dressing costume for Cloud so he can infiltrate and rescue the female characters from an adult business. Like how Hope goes from his cute nose to his cute angry piggy nose. Only thing that I'll miss is seeing Light without her cape: Beautifully scripted and scored, the FMVs in the game were a treat to players and often something to look forward to. However, Barret is an exception to that. I'm sure there have been some strong moments in past series.