Welcome to V-Flyer.
Tha fare code you are booked in will be on your ticket, or the email confirmation received from Virgin. The new email Eticket format clearly has the fare code displayed. It can be different on the outbound and inbound.
Fare codes are explained in the
fare codes section of the site.. This can be accessed by clicking the link in this post, or the link on the left side of very forum page.
MPM fares can only be upgraded using miles if you first pay a surcharge to upgrade them to a fare code that is eligible for a miles upgrade. All of this is explained in the
V-Flyer FAQs.Regards
Nick