This week's rail strikes will be "catastrophic" north of the border, the hospitality industry has warned.
The Scottish Hospitality Group said it was expecting revenues to drop by a third during the RMT industrial action.
The union has called strikes on Tuesday, Thursday and Saturday after talks failed to resolve a pay dispute.
The industrial action will cause massive disruption to Scottish services.
ScotRail has announced that the only trains it will run on the strike days will be some Central Belt routes.
The news that services connecting the north-east to other parts of Scotland were being axed has brought a furious reaction from the local business community.
Fergus Mutch, policy adviser at Aberdeen & Grampian Chamber of Commerce, said the north-east is being cut off.
Royal Highland Show affected
Events happening in Scotland on the strike days include the Royal Highland Show in Edinburgh, which runs from Thursday to Sunday, and a Barry Manilow concert at the Hydro in Glasgow on Thursday.
The industrial action, which has been described as the "biggest rail strike in modern history", is expected to involve more than 40,000 RMT members.
Meanwhile, a rail industry leader has said the dispute is resolvable.
Steve Montgomery, chair of the Rail Delivery Group, said more talks were planned for today - and that management wanted to work with unions on pay increases and reform.
He told the BBC that rail bosses were trying to work with trade unions on how to carry out modernisation and reform of the industry amid falling passenger numbers.
"Ultimately we do want to give our people a pay increase, but we have to get on with reform, and that helps us deliver the next phase of giving people a pay rise."
Talks will continue today
Challenged over the apparent lack of a pay offer from many train operators, Mr Montgomery - who also runs train operator First Rail - said talks, both informal and formal, had been ongoing and discussions would continue today.
"We need both parties around the table and we really require details and an acceptance that reform can go ahead," he said.
Meanwhile, the RMT's Mick Lynch told the BBC the union would "run this campaign for as long as it takes to get a settlement", potentially for six months or more.
"We're in this to get a deal - and we'll do whatever we can to protect our members and get them a square deal off the companies. But there's got to be movement from those companies."
UK Transport Secretary Grant Shapps has already warned that rail strikes could cost thousands of jobs in the industry.