Apart from anything else, nonce is a slang word used broadly.
What is a nonce in British slang?
nonce in British English
(nɒns ) noun. derogatory, prison slang. a rapist or child molester; a sexual offender.
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Nonce definition in American English - Collins Dictionary
The acronym N.O.N.C.E stands for 'not on normal courtyard exercise', according to the documentary, and apparently was first coined at the jail in Yorkshire.28 Mar 2022
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Nonce, a slang term chiefly used in Britain for alleged or convicted sex offenders, especially ones involving children
Also used occasionally as a general insult, regardless of the tendencies of the person to whom the word is applied.
a person who perves on little girls and loves to talk and touch them . They also get exited when ever they see a young girl
“Nah g why is rhys such a nonce”
“Honestly he perved on me for 3 months”
Urban dictionary.
So this fantasy court case the venue owner is going to attend will need to ascertain the meaning in use first maybe?