Small tip for you....
If you have booked and paid for Premium Economy on Virgin, make sure you get to the airport very early on the day of your departure, and dressed very smart too.
On checking in, tell the check in staff that it is a special occasion...ie Honeymoon, anniversary etc and ask them if there is anything that they can do to make the flight more enjoyable for you.
Virgin, like most airlines, oversell by loads, hence 9 times out of 10, they are looking to upgrade people. If you are dressed smart, at the airport early, and it is a special occasion, guess who is going to be considered strongly for the bump up to Upper Class.
Upper Class on virgin is incredible. Fantastic service.
Good Luck guys.