The first part is good but the book posed an interesting concept. Drunk hoplites.
He begins the chapter by commenting that there is no evidence in the records, written or archaeological, that hoplites went into battle drunk, however, he says, that doesn't mean that didn't. He then goes into a short discussion of how everyone drank wine in ancient Greece and gives two examples where the sources say something about drinking in the noonday meal. Neither of which say the hoplites were drunk, and only vaguely imply it. Out of 400 years of war, two drunk units does not a habit make.
And at any rate I can't image the hoplites drunk, that was a pretty tight formation and if the soldiery were drunk...well I don't know about you, but when I drink it gets hard for me to walk with hand in my pocket much less carrying a full array of battle armor.