Tha Fatted Calf has moved from Glasson and is now based in Athlone town center. Hop on one of the tour boats and go out on the lakes for a few hours if you have the weather. They leave near the castle. The selection in Seans bar has improved lately and you'll get some local St. Mels in there along with a few more plus it's claiming to be Irelands oldest pub so there's another thing to see! McGuires is good but doesn't open till late and The Malt House still has a small but decent selection like St. Mels, Kinnegar and Mescan.
Enjoy your stay!