Searched around and couldn't find anything definitive on this. I will be traveling on an award ticket on USAir from Den to PHL and then on to Rome. In "First" on USAir from Den to PHL, then USAir Envoy from PHL to Rome. Would I have access to the United Lounge in DEN. From what I read on the Star Alliance site, access my be restricted to "revenue tickets". Any experience with this?