I will hopefully be buying PE upgrades in a fortnight. I won't be getting to Gatwick until about four in the afternoon the day before our flight and Virgins desk will be closed. I figure the day before will give me the best availability for an upgrade, if the desk is closed can you purchase an upgrade at check in? Virgin advised me you can, but last time I was there they said you couldn't do this and could only purchase from the Virgin desk. Any ideas?