continue to celebrate wawa welcome america. it s america s biggest and best birthday party and it s all happening right here in philadelphia. nbc 10 has been giving you a front row seat to all of the festivities throughout the week. here s a live look right now at the ben franklin parkway, the site of monday s july 4th concert. and we re starting the parkway party early this year. you have to keep this in mind, 5:00.รง 5:00, the concert begins. families can celebrate today with free admission to the national constitution center and wawa hoagie day. nbc 10 s tim furlong at independence hall where thousands of hoagies will be served up about an hour from now, tim? reporter: 18,000 hoagies, vai. i was down in the basement where they re making them. this is the final group of hoagies, right here. this right here, these are the final boxes that will be loaded up. so you have to go down to independence hall in big tents down there, and each one of these boxes have like five hoag