There is certainly no shortage of places to drink if wine is your beverage of choice. the walla walla area has between 100 and 120 wineries, many of which feature tasting rooms to sample their creations.
Vintage Cellars
10 North 2nd Avenue
A lovely wine bar located downtown.
The Marc
Has a nice, elegant bar if you have a mind to drink a couple of cocktails or have a tasty glass of wine.