Hey fellow Final Fantasy X explorer! When it comes to side quests, make sure to prioritize completing the Monster Arena challenges to unlock powerful items and abilities. Don’t forget to visit the Baaj Temple to unlock Anima, a powerful aeon. Additionally, seek out the Celestial Mirror to upgrade your Celestial weapons. Lastly, be sure to participate in the chocobo racing mini-game to earn valuable rewards and even unlock the legendary aeon, the Magus Sisters. Happy exploring!