We are travelling to and from China on Cathay Pacific on a group tour later this month. The flight from Perth via HK on to Beijing is on Cathay Pacific. Domestically we usually travel Qantas and can make our seat selection prior to travel. I was just wondering if it is worth joining the Marco Polo Club? It would cost US50 each. I am not sure what the difference is with Asia Miles which appears to be free to join. Any advice would be gratefully accepted.