Myself and a few friends don't often get over to Buriram for a boys day out but on the occasions we do ( every 4-6 weeks) we visit the GoKart track near the stadium and then spend the afternoon/evening at Paddys Bar.
I thought it well worth giving a shout out for Paddys. The family that own it now are doing a fantastic job. Very friendly, welcoming and the service is really excellent. The cheese burgers are pretty damn good also. The locals that drink there are also a friendly bunch of guys.
Five of us managed to spend around 9 hours there on Friday, continual drinking, we ate twice, free pool and a bill of 5,000 baht. Without a doubt our bar of choice and great to see them doing good business.