Anyone can have access to that Flagship check-in, if they pay for Five Star service. I just looked it up.
That is $125 and includes AC access. $200 for two people.
Not bad. If you were planning on buying an AC day pass anyway, that's an extra $75 to be treated like a celebrity. So, you buy a ticket in Deep Discount Economy and have no elite status, but for $125 you are met at the curb, bypass the lines, get personalized attention and help, get into the AC and are escorted to the gate.