Iberia 50% Avios flight question
Hi,
There's currently a 50% promotion on Avios flights on Iberia.
Let's say you book a flight to seize the opportunity. I understand you can get a refund later on, paying a small fee. What happens if you want to change the date? Even if there's reward availability, you'd have to pay the 50% difference in Avios because the promotion would not be available by then?
Thank you.