As someone who works adjacent to the undergrad population I can tell you the level of drinking has remained the same, more so that going to a bar and paying premiums for drinks has become less appealing. A massive liquor store at 43rd and Chestnut in the new development there opened last year and it’s always hopping when I walk home from work, same goes for other stores near campus. Kids are just buying in bulk and having parties/hangouts on campus rather than going to bars.