EWR is nowhere close to the other international airports but still a good airport. As someone who flies approx 3 times a month, look for lounges thru priority pass or free access if u have certain status or if u r flying business class or buy a club pass. If you r flying international then you ll probably board from Terminal B. Research your lounges accordingly. 3hrs prior to your flight time is enough. Since u r going on a vacation after a long time, ignore the distractions and enjoy the experience. Load up on movies/shows on iPads. Enjoy the family time.