We visit this Chang's every time we come to Vegas and have always had great food and great service.  When the wait is long, we have also been able to sit at the bar and get full menu service.  The shrimp in lobster sauce is awesome and the chicken lettuce wraps are great.  I don't eat spicy food but my husband got the kung pao scallops this past time and even my wimpy self could handle them and they were great.  Also, the oo-long tea (spelling?) is a good hot tea that doesn't even seem to need to be sweetened.  The servers are very knowledgeable about their menu and always attentive.  Kids get crayons and Wiki Stix to keep them busy.  Apparently the large wall mural above the bar is different at every location, ask your server about the one here...you'll never guess what it represents.....