The provided web search results relate to the French Revolution (1780s) and other unrelated topics (Nextdoor, UFC, etc.). None of the evidence confirms that revellers gathered in Marseille, France, specifically before the final adoption of a law tightening penalties for unauthorized parties. The evidence is not specific enough to corroborate the claim.

The evidence provided for this claim consists of general Wikipedia entries about '250' (a year) and unrelated topics (Nextdoor, Eaton Centre, UFC). No source directly corroborates the specific penalties (up to six months in prison and a €30,000 fine for organizers of gatherings > 250 people) mentioned in the claim.

The evidence provided includes general information about the Senate and unrelated legal/financial topics (Indian rupee sign, Illinois Senate Bill, etc.). While some sources discuss fines and legislation, none of the provided evidence confirms the specific penalty structure (€1,500 fine for participants, rising to €3,000 for repeat offenses) linked to the Senate adoption of this specific bill.

The web search results mention general concepts related to public safety, reporting laws, and unauthorized activities (drones at airports). However, none of the provided sources specifically cite authorities citing 'public safety concerns, environmental damage, and lack of permits' in relation to unauthorized parties in a way that corroborates the claim across multiple independent sources.