One of the downsides of EK's F service is lack of ground service. The walk from the plane to immigration at BKK can be very long.
Not sure if this has been mentioned before but you can book a golf buggy whereby they meet you from the plane and take you through immigration.
Cost is 1450 baht. I've used this service a few times and it's very professional.
https://www.bangkokflightservices.co...port-services/
Available to J and F only.
Apologies if this has been mentioned before