Tickets for a concert. NEED AN ANSWER?

alright. i bought 3rd row tickets for a Blink-182 concert (its at the Hershey Stadium if that makes a difference). i was just wondering if there is a way im guaranteed that spot yanno? cuz you watch those kind of concerts everybody is just like standing. This is my first concert so i wasnt sure if i will be able to get up there. Because theoretically, someone could just buy a lawn ticket and get up there if there was no way to control it, which wouldnt make sense since you have to pay more for my kind of ticket as opposed to a lawn ticket.