I ate at Mars on one previous occasion in which I enjoyed it immensely. The food was excellent, the service was great, etc. Because I had such an amazing experience the first time, I dragged several friends there bragging about what a great place this is, how much they are going to love the food, ambience, etc. Upon arriving we were told that our reservation wasn't received, then we were later told that it was in fact received but ignored because a party of 10 had somehow doubled and we were simply no longer important. Crowded around a small table outside we ordered appetizers. The lamb skewers (among the dishes I had bragged about) bordered on gross, way overcooked. Other appetizers were also subpar. The waiter spilled sauce on my head and blouse and first acted as if nothing happened. When I reacted he looked up to the tree as if it was raining warm brown peanut sauce. The whole group was completely disappointed, and hungry. When we tried to explain our lousy experience to the manager, he walked away. HE WALKED AWAY. Its important to note that we weren't screaming, belittling, or being rude in any way as I have seen some very disgruntled patrons do once pressed too far. And this is just one more example of how service is changing in Austin. Some of the cool, hip, and trendy restaurants seem to have adopted the LA style of treating people.
Pros: Food has ability to be excellent
Cons: Inconsistent food, horrible service, a "you're lucky we serve you at all" attitude