Moderator: Asiana & Qantas Frequent Flyer
Join Date: Dec 2006
Location: STR/SYD/SMF
Programs: QF LTG / P1 , LH LT SEN / HON, OZ LT Diamond +, Marriott LT PT, HH Diamond,
Posts: 15,139
It is not allowed. However, what they really want to avoid is a constant back and forth. So if you change once it might be okay. The worst which can happen is that they tell you to take your original seat. Disclaimer: I have personally never experienced this as I would always have Mrs. DUF ride in the higher class.