No idiot it's not hard to understand when it is specified that no alcohol is allowed on the park. If you are walking around hugging beer bottles and beer cans, it's gonna attract some attention. When you're walking around with a little styrofoam sippy cup that you are pouring delicious alcoholic beverages into, from a jug that looks like it's JUICE, it's not as suspicious. And before you say "you can also pour beer into a cup", yea, you can, FROM THE CAN OR BOTTLE.
Yes, beer is better to drink at a baseball game.
But not when you've gotta hide it!
WHo knows though maybe people did drink beer at this park, maybe nobody gave them any problems.
PS I'll be in Vegas, sorry