Long haul flight into Newark, need to get to 5th Ave. my research says Airtrain, then NJ train to Penn NY, then either cab or subway to hotel. But is there a better way.? Can We get from airport to Grand Central without changing? Can we get tickets online before we travel or are they only available from ticket machines? We will be very tired when we land and don't want to be wandering around looking like bemused tourists. We ruled taxis and shuttles out because we land at mid day, traffic will be heavy then.