Summer concerts are what the season is all about. Don your newest romper or favorite denim shorts, crack open the White Claws and settle in for a night of music and mayhem. While you're waiting for the set to start, though (and let's face it -- we know you only paid for general admission and are posted on the lawn), you need to make sure your tailgate antics are the best at the venue. To do so, you need the right essentials. Check off what you're bringing to your tailgate and we'll see if your party is a worthy one.