So after reading through a few threads I just want to see if I have this right. If I get an Amex Platinum card and add my wife, daughter and son as authorized users we will have the following lounge access: When Flying DL or AA, each of us will have free access to the respective lounges using the platinum card. We will have free access to US lounges using the platinum card whether or not we are flying US. We can each get a Priority Pass Select Card which will get each of us free access to Priority pass lounges subject to the rules of the lounge (ie; boarding pass from same airline). Please let me know if this right or correct any misinformation. Thanks.