User blog comment:Shinhwalee/Major Event Preparation Guide for Admirals (OUTDATED)/@comment-190.207.174.127-20161003222809/@comment-3502824-20161003223627

If you want the best results, the entire fleet should be sparkled. This includes expedition 21 24 37 and 38, although not required as the potential for Great Success still exists for them without sparkle, although doing it with a sparkled fleet will get you consecutive Great Success without relying on major RNG.