Hello guys, my first time on this forum. I'm on BA to BKK then I have booked a flexible plus ticket on to HKT. TG booking engine only allowed me to buy economy. My standard baggage allowance is 20kg but I will certainly have more than one bag! Am I able to pay in advance for another bag? or should I do this at BKK? TG website seems to make to reference to this. Am happy to cancel this ticket and rebook if there is a better way to deal with the baggage issue...