EMP- walk in at lunch time.
Normally, you will not have difficulty getting a table at lunch as a walk-in. However, note that next week, EMP is among the restaurants participating in the "OpenTable Appetite Stimulus Plan" (Nov. 17-21), when they will be offering a 3-course lunch prix-fixe for $24 --the equivalent of Restaurant Weeks. So, that might complicate getting a table as a walk-in. As far as the bar is concerned, I'm pretty sure they serve the lunch Gourmand tasting there, but you can call and ask.