Well if they're in Trafalgar Street anyways, they may well want to catch their breathe at the pub with the great beer and the giant mural of famous dead Greek musicians from the world of rock and pop
Maybe somebody with a smattering of Greek could post on the AEK forum that that travel information is utter bollocks and they can just make their way to the Amex in pretty much complete safety via a 10 minute train journey from Brighton station, a cheapish cab ride from the city centre or just...