The 100-strong passenger group leader who had a brewery illegally said "twenty great or where we are" said the court.
A 25-vehicle convoy had set up a camp at Thwaites Brewery in Blackburn on May 26, hearing of Preston Crown Court.
Thomas Ward, 43, of Leigh, Wigan, has pleaded guilty to baggage, plotting to provoke and conspiracy to commit criminal damage.
The group later went on the rampage causing extensive damage, hearing of jurors.
Destruction Utter & # 39;
Jurors Thomas Ward, from Aspull Common, told the brewery that he wanted to leave £ 20,000 within the hour after cutting a gateway lock on the site in Lancashire.
After some discussion, Mr Ward agreed to pay for his call at midday the following day – May 27 – provided it was not damaged.
But prosecutors say that passengers went on board a wreck and the office building was restored later that afternoon after Mr Ward became convinced that he had doubled.
Finally, staff and police had full access to the brewery two days later and the chief executive of Thwaites, Richard Bailey, said he was welcomed by a "totally destroyed" scene, with an estimated damage of £ 300,000, the court heard.
The presence of passengers on the site led to 1,700 pieces of beer being poured away in case of contamination.
Mr Ward has pleaded guilty to deposit and conspiracy offenses while his joint John Ward, 33, also of Aspull Common, and a 17-year-old male, who can not be named because of their age, also admitted the offenses conspiracy.
Fourth defendant, Patrick Ward, 32, of Aspull Common, who has pleaded guilty to the same plotting offenses, is in proof of his absence.
The CCTV court heard – which also showed that young children play in the yard – stopped recording when the power broke on site just before 18:00 on May 27.
Kimberley Obrusik, prosecuting, said that Patrick Ward of Aspull Common was one of the criminals caught on the term of CCTV bringing items in the brewery.
The jurors were told that he denies that he was he, although he accepted that he was in the area as a Morrison supermarket and a nearby Bingo Gala on the same day.
The test continues.