The attendants were a bit too curt. I had to go to the bathroom but my food tray wasn't picked up. So I nicely asked if she could dispose of my tray so I could use the restroom. Reluctantly she took it, but She made sure I knew she had to walk all the way to the back of the plane, and the inconvenience it would cause her. I offered to take it back for her, she scowled.