The best P-C club is by gate 78. It has a staircase and an elevator. You take either up to the club, which is very nice. I was impressed, being used to the RCC clubs of my United.
Boomer and his girlfriend were flying out to London and I came to EWR to send them off. This mega sized President's club is large, has lots of work spaces, servers ready to take your drink order, nice selection of snacks, newspapers.
If your guests are arriving separately then you make sure you tell the desk agent and have them PAGE you. They are very picky about checking the membership cards.
ENJOY (and no "Oh catman's cheating on United" jokes please!)