I am actually looking to upgrade WT to WTP, which is why I am concerned about the class, as I believe not all WT fares are upgradeable...or more precisely, WT is upgradeable, but at a higher WT price class...

Basically, my 4 day WT Flight/Hotel package comes in at £1486 (about £250 less than the individual WT Flight & Hotel would cost on their own)...but I cannot see what class the flight part of the Flight/Hotel package would give me, so I cannot see if I would be able to upgrade it post booking...

Thanks