not to worry. You'll be fine. Have a hard copy of everything : insurance, hotel reservation, passport, thai pass, PCR, etc. Thai authorities are fond of hard copies. I found out the hard way and wasted 45 minutes because I had everything on paper except for one thing.
yes I am. Planning to get an ED visa during my stay though, I will stay for a year. You can easily take care of it over there. I believe it will cost you 1900 baht to get a 30-day extension.
it's outside. If you put the hotel on Google maps you can't miss it. There's a big banner and there will be dozens of people scheduled at the same time as you. Make sure to bring your passport. Took me about 10min and I had my results around 10pm today.
I'm way in the boonies and arrived to my hotel around 8am. I'm just staying there because it's super close to my muay thai gym, but moving back to the city proper after 7 days.