North Yorkshire County Council says time has run out to organise any further road closures for royal wedding street parties.
Council highway officers say they have worked with residents to ensure more than 30 events can go ahead.
Formal road closures have been arranged free of charge.
The council said people who still wished to organise events could do so provided they do not impact on the public highway network.
Events to celebrate the marriage of Prince William and Catherine Middleton on 29 April have been organised across the county.
They range from small parties in residential side streets to celebrations involving entire villages.
Conservative county councillor, Gareth Dadd, executive member for highways, said: "Our highways teams have worked hard with party organisers to make sure there has been absolutely no red tape to get in the way of things.
"The result is that North Yorkshire has this tremendous range of parties planned in urban areas and in smaller rural communities."