Overnight layover in Athens - a fun idea or idiotic?

I’m flying from Florence to Paros in July, and flights are about 50% cheaper flying overnight with a long layover in Athens.

I had the zany idea that I could land in Athens around 9:30pm, put my baggage in storage, and catch the train into the city and spend the night partying/exploring the city and aim to be back at the airport (probably a bit drunk) by 4:00am to check in for my flight to Paros which departs at 6:00am.

Is this realistic? Is the vibe and nightlife in Athens suitable for my little overnight adventure? I read on here that apparently the clubs in Athens are dead during summer because everyone goes to the beach clubs. Any positives/negatives or recommendations really appreciated!