A picture revealed the illegal wedding reception in a barn that was blown up by police in Merthyr Tydfil.
Police fined eight people after showing up at the wedding reception on Saturday night after receiving reports that people had gathered in violation of coronavirus regulations.
A number of pictures from the party were shared publicly on Facebook and Snapchat. WalesOnline approached the couple on Monday who refused to comment.
South Wales police said there were eight people in attendance, but a picture appears to show several other guests enjoying the festivities in the Heolgerrig area.
On the roof next to an electric heater, a row of chairs and balloons hangs the saying “just married”.
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Although the Welsh government is lifting the travel ban in Wales from Saturday, ending the “stay local” rule, people are still prohibited from gathering around the house with people from other households. Up to six people from two different households can meet and exercise outdoors.
It is unclear how many people attended the event in the Heolgerrig area, but police fined eight people upon arrival.
In February, the Welsh government allowed licensed wedding venues such as visitor attractions and hotels to reopen, but only allowed wedding and civil partnership ceremonies to be held.
Wedding receptions or other social gatherings after the ceremony remain prohibited.
The number of people who can attend ceremonies depends on the size of the venue and its ability to allow people from different households to observe social distancing.
The Welsh Government guidelines state: “Many people will want to celebrate the occasion with a reception or other form of social gathering with friends and family. Four receptions are prohibited on alert.”
You can read the full rules here.
One person who did not attend the event but knew other invitees told WalesOnline on Sunday: “A secret wedding was taking place on private land in an abandoned barn.
“The police arrived at the scene and guests were seen walking away from the event. I know people who were invited to the event and it was public that everyone could see it on Snapchat cards.”
A South Wales Police spokesman said: “At around 5:20 pm on Saturday evening, officials attended a speech in the Heolgerrig area of Merthyr Tydfil after reports of a gathering in violation of the Welsh government’s Covid regulations.
“When they were there, all those present were issued (eight) firm criminal charges and were advised to leave the premises.”