The Make It Rain Campaign

The Make It Rain Campaign is an annual event centered around The Gold Saucer.
The event increases
MGP rewards from most sources by 50%, stacking additively with MGP-increasing buffs. Uniquely, the MGP bonus from this event also affects Challenge Log rewards, which normal MGP buffs do not affect.
However, note that Make It Rain's bonus does not affect:
- MGP earned by selling duplicate cards to a Triple Triad Trader NPC.
- MGP earned from consumable vouchers.
- Jumbo Cactpot
- First-time rewards for Chocobo Challenge races.
These events also feature a vendor that sells various MGP-costing glamour and furniture items at a 30-33% off discount. New MGP-purchaseable items, generally furniture, also may make their debut during the event.
Lore
“Although the Make It Rain Campaign is billed as a celebration, unlike the other festivities held throughout the year, what exactly it celebrates is a question without answer. Held by Manderville & Manderville at the aptly named Manderville Gold Saucer, the main function of the Make It Rain Campaign appears to be to lure customers so that they can spend what coin they have on the many diversions within.
To that end, it has proven extremely effective. During the event, the amount of Manderville Gold Saucer points—a form of currency usable only within the confines of the Saucer—rewarded by its games is increased, and gamblers flock to the gleaming tower in droves. As if the allure of winning an arguably useless currency were not enough, on occasion adventurers are hired to lend mystique to the proceedings—or reduce the overabundance of mystique already present, depending on the day.
— Encyclopaedia Eorzea Volume III, p. 59