I did this in October in F. One stop in CMB on the way and direct on the way back. I confirm you don't get off in CMB, you only get one amenity kit, and the safety and ICE instructions come on twice..... The only major difference in F as far as I could tell was that the direct flight was packed but the stopping flight was absolutely empty, indeed we were the only F pax. I don't know if the stop was the cause of that or if we had just chosen a slow travel time but the exclusivservice was excellent.