Well after my wife and I sit down and decide "when to go", it's up to me a to call Member Services at the 11 month window and book our 1 bdrm or larger if other familie members are coming along, villa at our home resort. Since we fly to Disney, I start a spread sheet on airlines, flights, and cost amounts. Within a couple of months, I've picked the airline/flight/cost, show them to my wife and we then pickthe one she wants, and purchase the tickets. Then I call MS to add ME to the reservation. Prior to the 180 mark for making ADR's we will have picked our places to at, and I then call to make all of our reservations. We have gone so many times, we already know howmuch to budget so there's no big discussion here. My wife has packing for Disney down to an art. Usually two days before we leave, she pulls out the luggage and packs everything except meds and the very last items that must go in before zipping the luggage up. Unknown to me, she's been washing, folding and squirrling away all of our Disney clothes. She tells me upon severe penalty, not to touch anything insde the luggage. As far as what we do on what day once at Disney, it's what park do you want to goto today.
Well I would say that we both plan and prepare for our Disney vacation equally. It's just that we both have specific planning jobs to do.