Need some advice.Thinking of buying 24000 miles (£375) so that we could upgrade to premium economy on VA would the upgrade be for all three of us as we are booked together or just me as the account holder? Round trip is 20000 miles but I want to upgrade on the outward journey only therefore one way should be 10000 each. I already have 6500 miles so in order for us to upgrade I would need to buy the 24000. Is this correct? would it be better to phone VA rather than do it online.? Thankyou.