Even though it's still two months away, you can score a one-day pass to my favorite event of the year, the Northwest Chocolate Festival (NWCF), at a 40% discount. This year the festival runs October 3rd through 5th and has moved to the Bell Harbor conference center on the Seattle waterfront (Pier 66, 2211 Alaskan Way, Seattle, WA 98121).
As a result of the larger venue, ticket prices have dropped from last year. Advance one day passes are regularly $25, but you can get them with this groupon deal for only $15. Regular price advance ($5 off "day of" price) full weekend and VIP passes are available on NWCF's site.
I haven't yet written about this year's event, but here's info about last year and you can read about this year on the Northwest Chocolate Festival website.
You can purchase a $15 one-day pass for either Saturday or Sunday. Saturday tends to be more crowded. Unfortunately, the schedule of talks and workshops has not yet been posted to help you choose the day that most interests you.
Here's a direct link to the Groupon.
UPDATE: Use coupon code LOCAL10 through August 12th for an additional 10% off.