People who own second homes and caravans need to abide by the coronavirus restrictions and not place those who live and work in visitor hotspots in danger, residents of Portstewart and Portrush have said.
They were speaking after hundreds of cars filled with day-trippers, people with second homes or caravans and other out-of-town visitors descended on the two seaside towns on Sunday.
So many arrived that the PSNI was forced to close off some roads into Portrush and re-issue a reminder to people to follow Government rules to stay at home.
However, after the First and Deputy First Ministers relaxed restrictions to allow people to leave their local area and drive to somewhere else for exercise, there has been some confusion about what is or is not acceptable.
Yesterday there was no repeat of the large number of visitors that descended on the North Coast on Sunday, suggesting that people had perhaps listened to the advice of the police - although the dull, overcast sky probably played a role.
As the waves rolled in along Portstewart Strand yesterday there were just a few dozen hardy souls there, meaning ample space for social distancing.
Among those taking in the scenery was Samantha Marshall from Portrush who had cycled the four miles that separate the two towns for some quiet time at the beach.
She said: "You could hardly move in Portrush on Sunday and this morning there was rubbish lying everywhere.
"The town was full of bikers, cruisers, and people who were not local. Portrush is not a big place and you know the people who live there because you see them everyday so when it fills up, you know it is strangers.
"I saw loads of second homes opened up and you can see why people who live in Belfast might want to come to their second home in Portrush but the big worry is there could be a second spike of coronavirus so our health is being put at risk.
"Our family has a second home in Donegal and I would love to be in it but we haven't been there in months because we are trying to be responsible."
Police officers were on foot patrol yesterday in Portrush but the number of people walking along the shore front or streets were few and far between.
Business was fairly quiet at Tom Tom's Bakery in Portrush yesterday but 24 hours earlier trade had been brisk.
Owner Sebastien Peirzchalski said: "We were busy yesterday (Sunday) with a lot of local people and also a lot of people who are not local - but they are not strangers to us because they have second homes and caravans here.
"They told us they had come to open up their homes and let the fresh air in but there is a lot of confusion about why they cannot stay here in their homes or caravans.
"I don't think the Government has thought things through enough."
Mervyn Lewers who had travelled from his home in Londonderry to Portstewart yesterday said he was doing nothing wrong as far as he could fathom.
He said: "I came here for a walk along the promenade and a coffee for the good of my mental health and wellbeing - and that, as far as I know, is permitted and within the Government guidelines.
"I am sitting here looking for a suitable place where I can take my grandson fishing as soon as the restrictions on that are lifted.
"There is no one near me and I can see no difference in what I am doing here than if I was standing in a queue for a supermarket - in fact there would be more people in the supermarket queue.
"It was announced last week that people can get in their car and leave their locality for exercise. That is what I have done."