British here, hoping to be coming back to Thailand through the Phuket Sandbox plan next month. I want to stay at MINIMUM 3 months, but possibly longer if finances allow. What would my best options there be? In the past i've come on Visa exemption and extended (then popped next door and returned on another exemption).
TLDR : Answer Summary
A British national planning to return to Thailand under the Phuket Sandbox scheme is looking for the best visa options to stay for a minimum of three months. Suggestions include obtaining a single-entry tourist visa prior to arrival, which allows for a 60-day stay with a possible 30-day extension, thus totaling three months. Others mentioned the Thai TR visa, which offers two months with a one-month extension. Given the current closed borders, the suggestion to 'pop next door' for visa runs is not feasible.