Square Enix announced that 15 FFXI Summertime Adventurer Support Campaign events will begin on August 14, 2024.
Final Fantasy XI is available on PCs, and the FFXI Summertime Adventurer Support Campaign events will run August 14, 2024 through September 3, 2024.
Basically, the different events going on during the Summertime Adventurer Support Campaign all provide bonuses for activities people would already engage in while playing FFXI.
Double Simulacra Segment Campaign: The drop rate for simulacra segments in colonization and lair reives will be doubled for the duration of the campaign.