Hi Nicola!
That's a great question to ask! Thanks so much for choosing me to answer it for you!
There's definitely "daily price" savings to be had by adding extra ticket days & the No Expiration Option when you know you'll be visiting again. It really comes down your current holiday budget, how much you'd like to 'save' towards your next Walt Disney World vacation, and how many days you plan to spend in the parks in the future!
If your current vacation budget allows, and you were to purchase a 6 Day Magic Your Way Ticket with the No Expiration option, based on current pricing you'd be saving a total of approximately $78 or $13/day vs. the daily costs of a 2 Day Ticket for your March stay PLUS a 4 Day Ticket for your planned December trip.
Of course; 'The Longer you play, the Less You Pay per day!'
If you know that you plan to visit WDW several more times with your family in the coming years, the most economical ticket to reduce your 'per day' price would be to purchase a 10 Day Ticket with the No Expiration Option at 'adult' price for your entire party since your daughter would have turned 10 early in 2013. This ticket could save you as much as $530 total or $53/day over its 10, Non-Expiring Days of usage.These figures are in US dollars and based on current pricing on the
Tickets and Passes page of the Disney World website, and are subject to change. Feel free to do some pricing & savings comparisons of your own via the Ticket & Passes link above.
I hope this 'rough' comparison helps you decide if these savings are worth building into your 2012 vacation budget.
Please don't hesitate to call upon me again if I can be of further assistance with your decision making and vacation planning.
Have a Magical time on your two upcoming Walt Disney World vacations Nicola!
Kirsten