We have a 10 day park hopper ticket with the SPD promo. We want to upgrade to an AP since we are there 15 days and we'll be going on a Disney cruise next January (11 months from our vacation). How does it work as far as FP+? Will I lose all my times once I upgrade? can I only upgrade once we're at the parks or can I upgrade over the phone at any time? and how does FP+ work with APs? we are staying on site so can we still book at the 60 day mark?