Rick, the event was opened to the public, so as long as there were no bans against males, it's ok to be present. Even few guys likes make up and nail polish, so they'll shop in the cosmetic aisle if they need to, there's no rules against that. When you find a place you want to be and there are no restrictions, take the chance and enjoy the event.
Personally, I don't see issues with being mixed with genders, except for sporting events. I even use a female bathroom if the male's are locked, or the line is too long, because that's what the toilet is for. Although, there is a bathroom bill in Texas that states we'd be fine or jailed if caught, so screw it. If I need to go, its better than finding a tree outside.