From 8/3 01:00 PDT onwards

The Cactuar Dunes and the Gil Snapper's Cave will be open every weekend from Friday to Sunday!

[Campaign content]
Throughout the weekend, the Cactuar Dunes and the Gil Snapper's Cave will be accessible via the Dimensional Vortex.

[Campaign period]
Friday 8/3 01:00 - Monday 8/6 00:59 PDT