Yes. It took us two years, 3 applications and close to 10 thousand dollars for my Thai wife to get a Permanent Residentvisa for Canada. Last year we went to England-another 1,500 bucks for a visa. Same this year when we went to France. And even though she is a legal Permanent Resident in Canada, to go to the US, even on a cruise ship it is another visa, a few hundred dollars and a two year wait to get an interview. Yes, comparatively, Thailand is a piece of cake and very open.
Hmmm. Don't know why they would stop you if all was by the book and genuine. Ours certainly was. I suppose any country could refuse anyone entry for any reason real or imagined, Schengen and Britain included.
I got one Visa for England in 2024 and one for 2025 both for my wife. The company who did this was Easy Visa in Pattaya and the agent is Paul King. Asto what you need to make it work I don't know and you'd have to ask Mr. King. Best of luck.