Hi. I have a MYW package booked for November, with water park and more added to my park tickets because I remembered that was a requirement for getting the FD last year (or park hopper). I have 3 questions I can't find clear answers to, but I know that on this site, I'll finally get the info. I need. 
1. If FD comes out, can I just call or go online to add it to my existing reservation (if rooms are available for the promotion for the resort/time I have already booked)?
2. If not, should I book a whole new reservation with the FD, then wait to cancel my existing til I am set with new reservation?
3. If I CAN add the FD directly to my existing package reservation, will it reflect the ticket price increase because I have changed/modified my package by adding FD? IE: am I locked in to current ticket price either way?
Thank you so much for any help you can give.

1. If FD comes out, can I just call or go online to add it to my existing reservation (if rooms are available for the promotion for the resort/time I have already booked)?
2. If not, should I book a whole new reservation with the FD, then wait to cancel my existing til I am set with new reservation?
3. If I CAN add the FD directly to my existing package reservation, will it reflect the ticket price increase because I have changed/modified my package by adding FD? IE: am I locked in to current ticket price either way?
Thank you so much for any help you can give.