Depends on where you are from. I am British. Visited Phu Quoc in January and mainland last week. No visa required. If you are American you will require as they want to check you are not trying to invade 😂
it must surely be a yearly retirement visa? Not 90 days. (You do check in every 90 days) Your initial post says you have a multi entry. Do not let your retirement visa run out or you have to start again. Also if it’s not a multi entry, you must get a re-entry visa before you leave.
I have never heard of that visa. Are you sure it’s not a multi entry tourist visa? As already stated, you will not have any problem leaving on the day it expires. No harm in visiting immigration for advice several days before.
are you sure. Last year I already had a Bangkok Bank account and tried to open another. I have a retirement visa and had to go to immigration to get a document to allow me to do this.
As already stated, it’s not an easy task and almost impossible in most places. If you can afford, I wouid suggest an agent for the first one. Otherwise you will be stressed to the max 🤪