From Playonline.com:

Adventurers across Vana'diel, rejoice! The long-awaited Player Event Support service previously announced at fan events in the U.S. and Japan is set to debut today. At your behest, the brave moogles of the Mog House Management Union (MHMU) will dress up as everything from monsters and beastmen to holiday trees. A grand total of two hundred objects covering most everything an adventurer's heart could desire are available to lend your event that extra dose of creative charm!

So what are you waiting for? Check out the Player Event Support site for all the details!

Discuss this on the ZAM Forums!