New to shows, am I allowed to bring Buzzballs to the venue (if they don't sell them, of course)

See title. I want to bring buzzballs to the show next weekend since I know this venue doesn't have them. Obviously wouldnt bring beer since they sell that and don't want to step on their sales. Do you think they would mind? I think they'd be fun to drink in the pit too and they're so portable. I'll even bring some to share. Which flavors do you think go best with metalcore? I’m thinking espresso or grape