Not quite smoothly yet though - I saw reports of places being closed down for not having the SHA+ required certification.
Also from today's clarification - but Baby Steps!
“For those who do not finish their alcoholic drinks after the 9pm deadline, they should take their bottles home or try to drink up or just throw them away. Officials will be sent to make regular inspections.”
My suggestion is to pay attention to domestic tourism first, then bring on the internationals - and even then start with people who basically want to come "home" to Thailand (for work / family) before the "normal" tourism is opened.