Scottish events could be moved south of the border if curbs on events persists longer than south of the border, industry bosses warned.
Event organisers fear they will be left lagging behind England when the country's route map out of lockdown is revealed this month.
Industry leaders said there was a danger events in Scotland would be lost if there was a more 'optimistic' approach to easing restrictions in England.
An advisory group said they want to ensure Scotland's events industry, which is worth around £6 billion a year, is treated 'fairly and equitably' with other key sectors.
They are lobbying for events to be allowed resume under the controversial tier system, when First Minister Nicola Sturgeon sets out plans to ease restrictions next week.
Boris Johnson has set out provisional dates for large-scale outdoor events and indoor venues to return from May.
Peter Duthie, chief executive of the SSE Hydro, the SEC Centre and the Armadillo in Glasgow is chair Scotland's Events Industry Advisory Group.
Mr Duthie said: "There is a lot of optimism around about the vaccination programme, but the government seems to be sticking to a timeframe about which they can reasonably certain.
"You're talking three or four weeks.
"But if you're trying to plan months ahead, as many in the industry are, an insight into the government's thinking would be hugely beneficial.
"The government says it will be driven by data, which is absolutely sensible.
"But we need to have some understanding of what the data has to say for the lifting of restrictions, particularly over social distancing.
"People are still looking at doing events in the summer, but it's important to get a picture of what that might look like.
"At the moment we're all operating in an information vacuum.
"We need wider sharing of information and an outline of a timetable, albeit it with dates that everybody understands there's no certainty over.
"We're pushing for a four nations approach where it's possible.
"If there's a more optimistic view in England there's a real danger of losing events from Scotland.
"There is a higher degree of confidence that events will be able to take place in England in a shorter timescale.
"It is focusing the attention of event organisers and artists.
"The industry isn't looking for special treatment, but is looking to be treated fairly and equitably with other sectors.
"It's highly-regulated and is used to managing risk."
Paul Bush, chief executive of government agency EventScotland, said: "The advisory group continues to engage robustly and constructively during what is an extremely difficult time for the sector.
"It recognises that the delivery of timely information and an ability to forward plan as effectively as possible is vital for the return of events in Scotland."
