The islands will be too “small town” I think, but Phuket is nice because it will have everything you need but not so chaotic if you live a few KM from the city center
Assuming you aren’t running late. You look rather sus hanging around the arrival hall before immigration. I guess you could hang out in a toilet for 30 minutes.
You’d probably not have to worry and just be the last person off the plane and go through immigration normally.
It happened to me too but she just looked at screen and in 10 seconds I was let go lol, but I assume it’s because I recently got a new passport within the last 6 months and more than one record popped up and just confirming identity.