Make it a long weekend for yourself and companions!
Weather is expected to be great during the workshop peirod.
While only some of the schedules are currently known, Seattle hosts the Seattle Symphony, Seattle Opera, the Pacific Northwest ballet, several theatre companies, the Seattle Art Museum, etc…plus many artistic events on the UW campus. The Seattle Symphony has no events scheduled in the first half of the August yet. The Seattle Mariners of the baseball American League has four-day series of games with White Sox in the coming weekend of the meeting. The Seattle Sounders, of Major League Soccer will play with Huston Dynamo.
Great family entertainment can be found at the Seattle Aquarium, the Zoo, and the Museum of Flight (located in Boeing Field, half way to Seatac airport). The Blue Angels will be back in Seattle for the Boeing Seafair during Aug 1-3. The Pacific Science Center, located in the Seattle Center grounds (where the Space Needle is) offers temporary and permanent hands-on exhibits for all ages! Located on their grounds there are two IMAX theaters. One can take a monorail ride from the Seattle Center to downtown, or vice versa. There are relatively inexpensive eating venues at both ends of the monorail, at the Seattle Center House and at the Westlake Mall.
Most of the free museum day is scheduled in the frist Thursday of every month. There are two museums/gallry on-campus: Burke Museum of Natural History and Culture and Henry Art Gallery. They are both free on Aug 7. A complete list of free museum day: http://freemuseumday.org/sea.html