will require passengers 16 and older to be vaccinated. no vaccination requirements for its sailings from texas or florida. florida, where businesses can be fined for requiring customers to show proof of vaccination. >> i was surprised by the blink. i think they are on the better side of it. they are better off staying on team cdc rather than desantis. >> reporter: this man, a cruise industry expert, says the situation on cruise ships is unique. the cdc is trying to keep people safe. >> there appear to be a waiting pattern. >> reporter: a number of ships remained unable to dock when coronavirus spread through tight quarters. after the cdc issued a no sail order, ships sat idle for 15 months. now the cdc laid out a framework to get them in motion. trial sailings with volunteers before opening up to paid passengers or abide by restrictions with the most latitude on ships where at least 95% of passengers and crew are vaccinated. desantis sued the cdc over this