Bachgencwm

Sorry if this the wrong forum, but I could not find a suitable forum for my question. Can anyone confirm that if book a flight from London Heathrow via Thai Airways to Phuket via Suvarnabhumi Airport(BKK), I will be able to partake in the Phuket Sandbox by using a "sealed" transit area at BKK Airport?

I am in the UK and applied for a Non-O 90 day visa which was issued in 2 days.