for post-concert drinks, you'll do well at the Sitting Room, right by Seattle Center. They have a long wine list, fun cocktails that are unusual, a sort of Parisian ambience and a great cheese plate. Also, if you REALLY like cheese plates, the 35th Street Bistro in Fremont is only a short drive from Seattle Center and have the best cheese plate in the city (seriously, it's intensely fabulous) and cocktails. Not sure how late they're open.