Apologies for a somewhat duplicate post, but the only other post regarding this was from back in 2007.

What are the guidelines on pumping on a longhaul flight? Are there any issues tying up a lav for 15-20 minutes at a time? A friend suggested pumping in my seat, but even in F, I can't see myself doing that. Are F/A's generally considerate of this need? I am flying AA and know they have been in the news recently, and not in a positive light.

I leave tomorrow, so any advice would be appreciated.