List of Countries Not Requiring Quarantine

[Dodger]

I might have read it wrong , but on gaybuttons site , there is a copied statement from the tourist board , which says that people from low risk countries now have to stay for a min of 21 days if so that will be a bit of trouble as some people can only manage 14 day hols

Yep, you read that wrong.

I just read the statement I think you're referring to on GB's site and it says "Visitors from any of these countries (46 low risk countries) must have also stayed in that country for at least 21 days prior to departure and received their second jab dose at least 14 days before their flight to Thailand.

It doesn't say anything about the duration of visits in Thailand for fully vaccinated tourists.