Around 6,000 revellers will descend on a warehouse in Liverpool for what will be the first nightclub event in the UK for more than a year today.
The First Dance event, which has been organised by Liverpool clubbing outfit Circus, has been given the approval to go ahead by the UK Government as a test event.
Clubbers do not have to adhere to social distancing measures or mask wearing as part of the trial.
Tickets are available to residents of the Liverpool City Region only and punters will be required to take a rapid lateral flow test 24 hours before the event itself.

A negative test must shown at the door in order to gain entry.
The event will take place at the city’s Bramley-Moore Dock warehouse today and tomorrow night.
Fatboy Slim, Jayda G and The Blessed Madonna are among the stars scheduled to perform over the two days.
It is hoped that the event will once again unlock the UKs nightclub industry - which has remained closed for the entire duration of the coronavirus pandemic.
Similar test events have not been scheduled to take place in Scotland so far.
It is hoped that Scotland will be able to move down to level zero of coronavirus restrictions by the end of June this year.
But documents published by the Scottish Government says that nightclubs must remain closed under the rules of that level of restrictions.
The Night Time Industries Scotland trade body today announced that it would be launching a legal challenge against the Government over the restrictions it has imposed on the hospitality and night life sectors.

It has claimed that the curbs are “no longer justifiable or proportionate” and claims their continuation would be a breach of the Human Rights Act.
A statement from the group said: “The hospitality sector in general, and late-night sector in particular, has been driven to the edge of insolvency by the severe restrictions in place since the start of the pandemic.
"Scottish Government support has been wholly inadequate to compensate for operating losses and a majority of businesses have now incurred unsustainable debt as a result.
"Even worse, all strategic framework funding has now ended while there is no end date for the restrictions that make these businesses commercially unviable.
"39,000 jobs are now at risk as a direct result.”
Scotland moved to level three coronavirus restrictions earlier this week - with the likes of beer gardens and non-essential retail reopening for the first time this year.
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