I think it's standard practice for them to tell people it's a 30-minute wait to make them believe that they're busy. It was more like a 5-minute wait, and when they took us to our table, the back of the restaurant was mostly empty. They fill out the front first to give the impression that they are full.
The service was lackluster, especially after the waiter found out that we had a restaurant.com certificate. My friend's strawberry margarita was weak, after they told us that their original restaurant in Mexico invented the margarita, this margarita really fell on the floor. My Hussong chile relleno was made without the batter, and it was not tasty, very disappointing. What saved the day was the plate of flautas, lemony and delicious!
The mariachi band, take it or leave it. It's great for people who are already drunk and have a party or two behind them. If you want to carry on a conversation, forget it. The decibel level when the band is singing is explosive!