My wife and I are big fans of the Pei Wei chain.  We are semi-regulars at the location at the District at Tustin Legacy in Irvine, California and love it.  We were on a weekend trip to watch Spring Training Games in Arizona and this location was very close to the hotel we were staying at.  The restaurant is starting to show its wear and age.  It appears to be an older shop in the chain.  Things started off on the wrong foot with the gentleman that took our order. We asked for our usual order of Lo Mein with Beef and Kung Pao Shrimp and a side order of Pot Stickers.  Our order taker added extra shrimp to our Lo Mein instead of the Kung Pao Shrimp that we had ordered, so we only had one item for a family of four. Once the food came out, it was very evident that the quality was not what we were accustomed to from our usual location.  The beef was a bit fattier, and the overall dish was much greasier than we were accustomed.  The potstickers were seriously over cooked  were dry and had very bad flavor.  We then waited for a while for our Kung Pao that never came.  Once we figured out that there had been a mistake on the order, I went over to the front desk and brought it to their attention.  The manager recognized the mistake and to her credit said that she would handle it.  I offered to pay since I recognize that the order taker may not have heard me since it was very loud in the restaurant.  However the manager made our food and delivered it to us at no additional charge.  That was very good in my book.  The kung pao shrimp was definitely much better than the other two items that we had.  While I like Pei Wei very much the food at this location was not up to the standard that we are used to from this chain.