Lunarcon is an in game convention on the North American datacenter Crystal and the world Brynhildr. It takes place from Friday July 30 until Sunday August 1. There will a lot of evens and guests among whom the famous FFXIV streamer MrHappy. He is also part of the Twitch collaboration campaign. When you support your favorite content creator you can receive Deluxe Heavenscrackers and the Fat Black Chocobo mount.
There will be live performances of the Moogle Troupe, Technical Step and Stellazzio Virtual Theatre to enjoy and several contests to attend. You find them here. The schedule is not yet available but is expected any day now and will be published on the website of the Lunarcon.
To attend you can join the Lunarcon discord. If you want to participate you will need to create a character on the Crystal datacenter and unlock all housing areas.