Entering Thailand for the first time at the beginning of next month from TG 661 from HND in F. This flight usually arrives around 5 to 5:30am. Will the TG Fast Track line be short? I really want everything to flow as smoothly as possible on this trip since I rarely travel with someone else, as is the case this time. Also planning a short transfer to a domestic flight in the morning. Most likely aiming for an award on Bangkok Airways 7:30am departure to USM using Eithad miles. Any advice for a BKK newbie is sincerely welcome.