To check in with an e-ticket you only need to provide a valid passport (for international flights) or government issued ID (domestic flights) so the agent can pull up your record in their system. The check-in agent then provides your boarding pass to take to the gate.
E-tickets are typically printed at home, though many venues will permit you to show your e-tickets in your AXS app to enter your event. Unlike e-tickets, AXS Mobile ID tickets are digital and can only be used with the AXS app and cannot be printed.
When a customer purchases an e-ticket, the e-ticket is emailed to them as a PDF file or stored in an online ticketing system. The e-ticket contains information such as the customer's name, flight number, seat number and other relevant details about the purchase.
Besides providing itinerary details, an e-ticket itinerary receipt also contains: An official ticket number (including the airline's 3-digit ticketing code, a 4-digit form number, a 6-digit serial number, and sometimes a check digit) Carriage terms and conditions (or at least a reference to them)
The easiest way to book your trip is on Amtrak.com or the mobile app. You'll receive your eTicket as a PDF attachment to your emailed receipt. You can even retrieve your eTicket in the app.
In some cases, you'll have to print out your eTicket to show to the staff at check-in (along with, of course, your passport and visa, if required). You may not need to show these to anyone if you check in with a self-service check-in kiosk. You'll also be able to check in online if that makes it easier for you.