Looking to book a cheap 1-way ticket. Fairly sure of date/time but not 100%. If I book a Saver fare, waiver states I can cancel my trip. If I book a Main fare, the ability to change the flight is listed (difference in price may apply, of course.) But what I don't get is, if I want to change a Saver far, can't I just cancel it and re-book the new flight? What flexibility would I gain re: changes by bothering with Main?

• If you purchased a Saver fare for travel through December 31, 2020, you may:
  • Cancel your trip without a fee and deposit the funds into My Account wallet or receive a credit certificate for future travel.
• If you purchased a nonrefundable First Class, main, or award ticket for travel through December 31, 2020, you may:
  • Change your trip without a fee. A fare difference may apply to your new itinerary.
  • Cancel your trip without a fee and deposit the funds into My Account wallet or receive a credit certificate for future travel.