What are the places, where having a premium credit card helps?

[parthv]

Like Access to the Premium Washrooms at Phoenix using Amex or Premium Cards

 

[moneyMaker]

There is too much crowd in normal card lounges, better to get entry into premium ones

 

[sidp]

May be lunch with clients?
In Presence of any shallow person who assess your worth with which card you have or which car you drive?