Here and there, I've done research on the ancient Greek symposium, and since we would guess that Epicureans were prudent and serious-minded folk, then we could speculate that they made sure to dilute their wine sufficiently, and thereby allow the philosophical discourse to continue longer into the evening.
As for research, found this but access requires purchase:
Chapter 9 The Hellenistic Symposium as Feast
https://brill.com/edcollbook/title/35911
This paper will focus on drinking and dining at Athens using ceramic evidence from the excavations of the Athenian Agora to explore the shift from wine-soaked Archaic and Classical symposia to food-rich Hellenistic banquets and possible explanations for the change.
(A lot more to discover and post in the future).
