This sets the palette and the wording for everything after it.
They'll answer all three. The starred option is what gets printed on the ticket.
The toast is the only wink the trap gives. Keep it dry — it should read as flirtation, not an error.
Skippable. Most senders leave these as they are.
The link carries the whole thing. Nothing to install on their side.
The gap between those two rows is the funniest thing in this flow. It's the reason people open the results twice.