6th Singularity Camelot: Roayl Castle free quest is the best AP & time saving location to farm Medal of Great Knight. You'll get about 3-4x Medal of Great Knight by spending 210AP.
Rashoumon event (Ibaraki Douji event)
Murder at the Kogetsukan
Inheritance of Glory
Best Craft Essence: Craft Essence Tier List
Fate Grand Order Farming Items
FGO Reroll Tier List [5/11 updated!]
Angel's Song
Stheno
Cute Orangette
Ishtar (Archer)
Ereshkigal
Arthur Pendragon(Prototype)
Gorgon
Black Holy Grail (The Black Grail)