Originally Posted by
gijoe24jp
They were offered RT tickets. My dad insisted on $$ off vouchers, but they just flatly told him "No."
Reminder @:-)
Tell the gate agent that most of your flying is
international; and that domestic R/T tickets don't work for you. Hold your ground. You may need to say this a second time so that it registers with the gate agent.

It solved many a problem over the years.