Haha. Arrivals only.It’s over to the right as you face the immigration desks...there are 2 lanes there, one is priority, the other for seniors ( defined as over 70), those with young children, and IIRC those with disabilities.
Ive been waved there by the staff checking that passengers have completed the arrival form correctly.
That said, I know there are 2 immigration areas ( East and West?) , so I assume the position of this lane is the same in both.

I think many countries are going in this direction. The question is how did they implement the fingerprint scanning. Is it at the border office booth (as they had in the US a few years ago) or is it a separate booths along the line (as they now have in the US)? The former implementation is a disaster because it will make the line slower but the later is actually an improvement and will make the line go faster compared to the no fingerprint scanning line.

If you don’t know what I’m talking about then please read again what I wrote. Please take a special care knowing that I haven’t yet passed the new fingerprint scanning process at BKK and haven’t claimed anything like that in my post. In addition, please go back a few years back and enter the US as a non US passport holder to see how it was and then do the same thing nowadays. Surely by now, you will know

In Samui departures last month each booth had a separate member of staff outside assisting the travellers with the fingerprint scanner. The queues, while not outrageously long, were much longer than usual and the airport was quiet.

You should have enough time without needing fast track so long as there’s no lengthy delay. The fast track will mean less hanging about in queues if immigration is busy, so you might want to do it anyway. I’ve been delayed on an incoming flight previously on separate tickets with separate airlines (incoming on Thai, outgoing on Bangkok Air) and the ticketing desk simply moved me to the next domestic flight with no charge. Maybe I was lucky but it was very straightforward.

Also I’d try and get Eva to check your bags straight through, although it’s separate tickets (and the airlines don’t have to) I’ve been lucky most times in getting my baggage checked straight through. You would then just follow the airside signs to the special transfer gates for Samui, Chiang Mai, Phuket etc for a passport check and through to the domestic departure area. I’ve never requested this with Eva, but had success with Lufthansa, Emirates, Thai, Air India, Singapore and Turkish.

Good luck!

Oh just re-read and noticed you are in business. You should get a card from the crew on board to entitle you to use the fast track lanes. As I say, I’ve never arrived with Eva, but always been given these with Emirates, Lufthansa etc. The fast track isn’t well signposted IMHO, but it’s just towards the end of the regular entrance to immigration.