Completing any A Superyacht Life mission now through May 15 will get you an extra GTA$100,000 bonus (delivered within 72 hours of completion), while the current Weekly Challenge for completing three missions lands you an additional GTA$100,000.

PEYOTE PLANTS
Be on the lookout for Peyote Plants. Munching on these psychoactive cacti will temporarily transform you into denizens of the deep including a Killer Whale, Tiger Shark, Dolphin, Stingray, Hammerhead Shark, or Fish.
3X GTA$ AND RP ON EXTRACTION
In Extraction, a team of Bodyguards must escort a valuable executive from a crash site to a nearby rendezvous point while fighting off a lethal Hit Squad tasked with finding and neutralizing their Target. Regardless of the outcome, both sides will receive 3X GTA$ and RP for participating through May 15.
See full event details at the Rockstar Newswire