constructive critics regarding crew ?
The #1 on the complaint list for Asian airlines flying out of Europe is "They served me dinner, then they disappeared till breakfast". If your remarks are centered around this, keep in mind, that with the 15+ hour shift, only a junior is kept on in between to handle pax call buttons. If you are looking for compensation for some other grieveance, it is wiser to contact the local office, because as forumpersonna points out, the internet generates a stock reply.