Walla Walla is known for excellent wine, and is home to more than 100 wineries.
For a wine tasting experience without much work, you can visit the 30+ tasting rooms in cute downtown Walla Walla. Info on downtown wineries: https://wallawalla.org/downtown-walla-walla-wine/
There are also fantastic tasting rooms onsite at the many vineyards in the area. Tips on visiting wineries around Walla Walla: https://www.savoredjourneys.com/walla-walla-wineries-tasting-rooms/
Additional suggestions: NYT recommends, “for optimal [Walla Walla] local flavor, try the southside four-step of Gifford Hirlinger (giffordhirlinger.com), Balboa (balboawinery.com), Beresan (beresanwines.com) and Sleight of Hand (sofhcellars.com).”
If you’d like to schedule a guided tour, there are a number of professional touring companies in Walla Walla, including this one: https://www.bacchusandbarleyww.com