Hollywood Bowl dining options
Here is a link from last year that may help:
And these are the rules for lease events such as Coldplay & The Beach Boys (non L A Phil) at the Bowl: They are different rules than for regular Bowl events.
NOT Permissible in the Theatre during Lease Events:
Alcohol and/or controlled substances. You may purchase alcohol inside.
Glass (including drinking glasses) and aluminum cans, regardless of content.
The following are allowable in the Bowl:
Picnic baskets and coolers no larger than 15" by 22" long by 15" high.
Factory sealed non-alcoholic plastic bottles, one liter in size or less.
Re-useable containers (such as Tupperware or sipper bottles) holding food or non-alcoholic beverages.
Make sure you check the rules for whatever event you're attending. They're different for the Bowl's own even (like the L A Phil in the summer) than they are for events that just use the Bowl as a venue. For the "official" events, you can bring wine and food. I think there are more limitations for the other events. I'm sure it's all on their website. I know of friends who assumed they could bring wine to an event, and had to buy it there.