Dear fellow EK flyers, I am considering paying for an F or J ticket on this route and I would really appreciate it if you discuss the differences in service based on your experiences on this route. I realize that the EK 77Ws on this route are equipped the F Suites and that J gets flat beds but in a 2x3x2 configuration. Since it is a night flight, I am assuming that EK provides amenity kits in both F and J. Also, does EK have Argentina or Brazil-based cabin crews? Thanks in advance.