Let's consider other elements of your vacation.
There were 30,000,000 people who took a cruise last year. There were 21,000,000 people who visited Disney World. There were 43,000,000 people who visited Las Vegas. This didn't include that Caribbean all-inclusive vacation you were going to take, or that land tour to Europe, or just a drive yourself vacation to the beach or a theme park.
This means there could be almost 800,000,000 transactions from airlines and travel providers that could be affected.