I think vaccination for children 2+ will be available by October. Because it will take two doses plus 2 weeks, most people will be able to be fully vaccinated by Thanksgiving. Maybe fireworks will come back then! Honestly, I think fireworks could come back sooner IF Disney could figure out a way to keep the thousands of people from leaving the parks at the same time. Unfortunately, when there are firework shows, everyone who is tired tries to stay for the fireworks, and then they all leave at once. People are packed together so closely when they try to leave MK after fireworks. It honestly is kind of scary at times even before the pandemic!