I frequented a “party house” in college. You’d stop by on a Tuesday night and there’d be several people there getting drunk, hanging out, and dancing to loud music. To anyone who didn’t frequent that house, they may have reasonably described it as a party. But the parties were only on weekends, and they were much bigger. That was just the normal background level activity for that particular house. If you asked someone who lived there about the party on Tuesday, they would quite honestly say there wasn’t a party on Tuesday.

So even what qualifies as a party, let alone if it was at that house or a different one, may be reasonably in question, and dependent on the observer.