So, here's the question. If you don't come here to TTOL or other social media sites, how do you know you are supposed to fill out the form?
When I reviewed my trip itinerary on Delta's website there was a message at the top that said something like "you have travel documents to review". One is to verify your passport and the other is the link to the entry.sx website. I don't know what other airlines do. But I did know about the form from TTOL.
