To expand slightly on previous comments, there are two areas that make drinks: the upstairs bar and the downstairs sandwich/deli area. I much prefer the downstairs area as the service is usually better, the food is made to order (albiet only sandwiches), and its usually less crowded.
But, if you want to sit at a bar and drink instead of taking your drink with you to another seat, then the upstairs bar is where you want to go.