Originally Posted by
AngelMcD
1. Never tried to do it with a one-way ticket, but I can't imagine why that would change things.
2. As long as it's within 24 hours.
3. It's very easy to do online.
Another trick is to indicate you will pay in cash, and the reservation will be held for you until tomorrow. At which point, you go back to the reservation, and charge it.
But I would just book it on co.com.