Marston's operates 21 sites in Scotland, of which eight are currently closed amid curfews on hospitality industry.
Nicola Sturgeon issues plea after 180 Scots test positive for coronavirus following trips to Blackpool.
Strict new measures will come into effect on Friday for pubs, restaurants and cafes across Scotland.
A closing time of 10pm came into force for pubs and restaurants in Scotland on Friday.
The Scottish Hospitality Group has warned the sector is already 'on life support' with 90,000 jobs at risk.
There is some Covid-19 transmission in the city's hospitality sector, the First Minister said.
The initiative which sees the UK Government foot 50% of diners' bills has not been extended into September.
The First Minister said failing to follow guidelines could lead to outbreaks of coronavirus.
Hairdressers, nail salons, dentists, hotels and shopping centres will also open their doors in coming days.
Nicola Sturgeon calls for people to socialise safely as the hospitality sector takes another step out of lockdown.
Stirling University scientists will look at how the easing the lockdown could work for licensed premises.
