I understand that with a MP roundtrip redepmtopn, one can have a layover in a city for up to a year. How exactly can you book a 1 year layover if you can only book tickets 330 days in advance. Further (and more specifically), if I am about to book a trip to Europe for NEXT summer, and want to do a 1 year layover, I will need to book 330 days + 1 year in advance...is that even possible?

Thanks