The annual Hull Youth Football Carnival opens Wednesday and runs through next Sunday from 5:30 to 11 p.m. each day. The carnival is located on Hull Shore Drive, just past the Nantasket Beach Resort. For the first time in more than a decade, this year’s carnival will feature a fireworks display, according to spokesman Greg Grey. He said fireworks would start Saturday between 9 and 9:30 p.m., with a rain date of June 24.