Here’s the whole thing. Might be unrelated.

http://www.thaiairways.com/thai-serv...d-check-in.htm

Suvarnabhumi Airport

Departure and Check-in

Check-in counters open 3 hours and close 40 minutes before departure time
Boarding gates open 1.15 hours and close 10 minutes before departure time

International Flights

Royal Orchid Premium

Our Royal Orchid Premium is located on Level 4 of the main terminal and covers an area of 5,000 sq.m. We take high pride in our newly introduced “Royal Orchid Premium” service that is exclusively extended to THAI Royal First and Royal Silk Class passengers once they arrive at Curbside. At Suvarnabhumi Airport, we guarantee the exclusivity that you cannot find anywhere in the world;

Royal First Check-in

Drop off at Entrance No.1, PTC 4th floor
Check-in at Royal First Check-in Lounge
Royal First Class passengers will be escorted by the staff from curbside through all services.
Other premium services provided are
•Baggage Assisitance Service from curbside to Royal Orchid Premium Check-in
•Fast Track Immigration
•Royal First Lounge (Concourse D)
•Royal Orchid Spa Lounge (Concourse D)
•Royal Orchid Lounge (Concourse E)


Royal Silk Check-in

Drop off at Entrance No.1, PTC 4th floor
Sit Down Check-in Service is provided at Row A1 - A19
Other premium services :
•Fast Track Immigration
•Royal Silk Lounges (Concourse C, D)
•Royal Orchid Lounge (Concourse E)
•Royal Orchid Spa (Concourse D)


Royal Orchid Plus Gold / Star Alliance Gold

Drop off at Entrance No.2, PTC 4th floor
Dedicated Sit Down Check-in at Row B10 - B15
Other premium services for ROP Gold and Star Alliance Gold card holders
•3 Royal Silk Lounges (Concourse C, E)
•Royal Orchid Lounge (Concourse E - West)


Group Passengers

Drop off at Entrance No.2, PTC 4th floor
Dedicated Check-in at Row D8 - D10
Baggage Drop Off at Row D11 - D12

Premium Economy / Economy

Drop off at Entrance No.4/5, PTC 4th floor
Check-in counters for Premium Economy / Economy Class passengers located at Row H1 - H18 and J3 - J16
Other Dedicated Counters;
•B16 : Thai Official Passport
•C2 - C9 : All Flights to Korea and Japan (20:00 pm. - 01:30 am.)
•H19 : Excessive Baggage Counter
•J1 : Baggage Drop For Internet / Mobile Check-in
•J2 : Infant / Disable Check-in Counter
•J17 : No Checked Bag Counter
•J18 : Stand-by Counter


Domestic Flights

Royal Silk Class

Drop of at Entrance No. 2, PTC 4th floor
Dedicated Sit Down Check-in Service is provided at Row B1 - B3
Other premium service :
•Royal Silk Lounge (Concourse A, 2nd Floor)


Royal Orchid Plus Gold / Star Alliance Gold

Drop off at Entrance No.2, PTC 4th floor
Dedicated Sit Down Check-in at Row B5

Economy

Drop off at Entrance No.2, PTC 4th floor
Common Check-in at Row B6 - B9 and C2 - C10
Other Dedicated Counters;
•B4 : MP / Senator
•C1 : Infant / Disable
•C11 - C12 : Stand-by Domestic
•C15 : Domestic Baggage Drop For Kiosk / Internet / Mobile Check-in


Kiosk and Internet Check-in

Kiosk and Internet Check-in are also available for domestic travel. The kiosks are located between Row B and C
Dedicated bag drop counters for kiosk and Internet Check-in at Row C15