EK put in a TEN acrross seating in their B777-fleet.
in their B773 that means 389 Y plus 49 C class, about 50 seats more than on Thai's 773. EK's charter type seating means simply that a normal caucasian simply does NOT fit into the seat at shoulder level. either one sits with bent shoulders or leans toward aisle/window, if possible. the traytables are foldable as there would be no space for a standard traytables - during service all pax MUST sit upright, otherwise the pax behind cannot be served and you will be mercilessly woken up during sleep (even if you don't want to eat)

during boarding-disembarking many pax barely can walk straight through the aisles, very simply too narrow - one cannot think about an emergency embarkation from Emirates 773 with 438 pax plus crew - realistically a very low chance to get out in 90 seconds.

altogether, it is totally IRRESPONSIBLE to operate a long haul aircraft like the B773 with a ten across seating - no other Asian carrier does so on the long haul (not MH, SQ, TG, CX!!!)

after a full London -Dubai -Bangkok -Hong Kong flight - you can book the physiotherapist - that's for sure.