Originally Posted by
f0zzyNUE
as long as you have not started your trip the repricing will be active and based on the fare that is available on the day of rebooking. after you started your trip (flown first segment) you can be rebooked for free within the P-class bucket. If P is not available, then you have to pay the fare difference as well.
As far as I have understood, P class availability is not enough. The other fare rules must also be fulfilled, meaning you will have to return no later than 3 months after the first stopover. Since the first segment cannot be later than June 30, you will still have to return by September 30 - or earlier if you started your trip before June 30.