We can't separate the two because they're both in faerieland, they're both considered "events", and it feels like the questing event has been forever ago. Plus when was the last time this festival came around? 2010??
If they wanted to do this lame-ass attempt at adding a game, they should have stuck it in Shenkuu who doesn't have a festival. Or cracked open Lutari Island, or literally put it anywhere else that doesn't have a yearly event that could easily be misconstrued as the other event in the same area with the same characters.