Video of party goers who had spilled out onto the street, filmed by Jen Claire.
A man in his 20s was arrested in Jersey over the weekend after police were called to a house party of 100 people in Greve de Lecq.
Current current Covid restrictions set out that a maximum of 10 people can gather indoors at home.
Over the Bank Holiday weekend there were 11 call outs to parties and noise disturbance, 10 of which were following Covid rules.
Police say they also arrested a man who was later charged with drunk and disorderly conduct at the same event.
Hospitality bosses fear any spike in cases resulting from private gatherings might prompt another 'circuit breaker'.
The government ordered the closure of all pubs and restaurants in December 2020, as cases of coronavirus increased rapidly.
Gavin Reid, Managing Director of Jersey's biggest pub group Randalls, says businesses are doing everything they can to follow the rules.
Two further arrests were made in St Helier, on Friday and Saturday night for drunk and disorderly behaviour - both are being dealt with by Parish Hall enquiries.
Officers added that staff and customers in pubs had largely followed the rules, after the early reopening of so-called "wet hospitality".
The States of Jersey Police says there had not been an overall spike in crime numbers.