The employees at Diamond shamrock are extremely pleasant. They very conversational and a lot of fun to talk to. I go to Diamond Shamrock on a regular basis and I'm never disappointed with them! It's nice when you get to know the employees and for example you go in to buy a pack of cigarettes and they remember what kind of cigarettes you're going to get. It's nice to only have to say, "yeah, i'm getting some cigarettes too." Maybe it's just me but i like those little things. makes me smile.