You need to do High Isle Delve, World Boss and Volcanic Vent dailies by talking to Wayllod, Parisse Plouff and Druid Peeska in Gonfalon Bay to get Event Tickets. Just head directly forward and up the stairs after taking the Wayshrine to the city.
Snamyap, I don't recall any details but was tired of running around and wondering what I was supposed to do. It wasn't difficult it was frustrating and I didn't enjoy it.