Worst case I can always access the other lounge using my PP card.
Does anyone know if the Arrivals Lounge is open? They don't seem to list the hours of that lounge so I'm not sure if I would be able to use it for a quick shower before heading into the city. It seems like a better use of time to grab a bus into the city for a five-hour layover and enjoy a few pints with some fish and chips than sit at the airport.