Love the event however if I had a dollar for every guild or zone chat I saw in-game yesterday asking if the Witches Festival experience buff was active and people explaining it was a passive I'd be quite rich, or at least rich enough to purchase a new in-game home.
On a side note several people where mentioning there was no extra experience for daily writs. I had the same problem. I'd blown on the whistle and the experience gain was the same as everyday.