The "premier flagship event of the global cannabis culture" may sound like a big claim, but as far as anyone can tell, Seattle's massive Hempfest isn't stretching the truth when it bills itself as such. Returning for the 28th year and touting itself as a major influence on weed legalization in Washington State, the cannabis convocation will bring three days of talks, pot-loving celebrity guests and congresspeople, and hundreds of vendors to Myrtle Edwards Park, where throngs of Seattle stoners will be greeted by four stages buzzing with live music, panel discussions, lectures, and other entertainment.