what can you bring in for drinks

We have not brought any in ourselves. According to their web site, you can bring glass beverages, wine and beer in with the exception of leased events. https://www.hollywoodbowl.com/concerts-and-events/general-info/house-rules/

Yes you could bring anything but nothing in glass containers

I saw everything from beer, wine, and hard liquor in the bags, coolers and picnic basket being carried in by concert goers.

I've never brought anything in. Not sure about that. But they do sell a variety of drinks including wine. 😃