First, you're not limited to vaccine sites in your city or county — Florida residents can snag an appointment at any vaccination site in the state. The Pfizer shot is available to teens as young as 16; for the Moderna or Johnson & Johnson vaccines, you must be at least 18. You probably already know, but the Pfizer and Moderna vaccines require two shots a few weeks apart, while the Johnson & Johnson vaccine is administered in a single dose. There are a few different ways you can try to get a vaccine. Most of the major pharmacy chains are now carrying the vaccine in Florida, including Publix, Walmart, CVS, Sam's Club, Walgreens, and Winn-Dixie. Each has its own booking platform and method for releasing appointment times. A recent thread on the Miami subreddit has some tips for how and when to try to snag an appointment.