Hey fellow Final Fantasy X explorer! When it comes to side quests, don’t miss out on the Celestial Weapons quest. Each character has a unique weapon with powerful abilities that you can unlock by completing specific tasks. Also, be sure to tackle the Monster Arena challenges for some great rewards and tough battles. Don’t forget about the Al Bhed Primers scattered throughout the game for language mastery. And of course, the intriguing and sometimes challenging optional Aeons are a must-try for any completionist. Good luck on your side quest endeavors!