No he won't. "Press credentials" only mean something if the group holding a given event considers your employer to be legitimate. There's no Republican candidate, officeholder or organization on the planet that's going to give a person with an Air America employee ID access to anything except the exit door.
It does give him a platform from which to scream “Freedom of the Press”, and gain legitimacy in our “esteemed” MSM. He is now officially a member of the press.