The sticker gives you no privileges - it's only there to help ground staff to quickly identify passengers queuing in the wrong gate e.g. two Qantas flights, or two CX flights to same destination.

Lostabroad - CX doesn't own the buggy service. CX will pay for buggy only if your connection is tight. Not because you have status and/or flying F. Don't like it? "Transit BKK la". But honestly the distances between gates in BKK are further.