A couple of our friends and my wife and I went into Fat Cat for a drink on a Friday evening. Every place at San Marcos is packed on Friday night but there were only 2 tables occupied (that should have told us something!). We went to the bar area and ordered after dinner drinks. When we got the bill, the drinks were $.50 higher each than on the menu. The waitress said drinks ordered "on the rocks" were higher. I have never heard of this and I travel extensively. When we left, we mentioned to the manager the extra charge. He stated "I have never heard of it". Obviously, we won't be going back for drinks or food!