It appears the following is in force:
No changes to Orange and Red Zones since this: Thailand expands lockdown in 29 dark-red zone provinces from 3-31 August 2021
Orange: Restaurants and eateries are allowed to open per normal hours, and offer dine-in services without the sale and consumption of alcoholic beverages.
Red: Restaurants and eateries are allowed to offer dine-in services up until 23.00 Hrs., without the sale and consumption of alcoholic beverages.
Change for Dark Red Zone : Thailand eases COVID-19 restrictions from 1 September 2021
Dark Red: Restaurants and eateries, including those inside shopping malls or similar venues, are allowed to resume dine-in services up until 20.00 Hrs. without the sale and consumption of alcoholic beverages. Seating for dine-in customers shall be limited at 50% for air-conditioned restaurants and at 75% for the open-air ones.