I got the exact same pin and while I have not called to confirm prices this is what I got when I went to the website and attempted to compare apples to apples (in order to look at their prices). I sometimes know how the Dis works on advertising these deals as ds worked there-
OK here is the breakdown as I see it. The $624 price per adult is base on:
Moderate room 4 nights (their choice of views but if you asked you would be told that its priced on standard) DOUBLE OCCUPANCY
Magic Your Way Dining Plan 4 days
4 Day Magic Your Way Base Ticket (1 park per day no hopping)
MY Website Calculations:
I selected dates of Oct 2-Oct 6 (the offer begins the 2nd)
I chose 2 ADULTS room occupancy standard view at PO Riverside (it attempts to default to a water view)
I chose the 4 day base ticket (it attempts to default to a 5 day ticket with hopping and water perks so had to alter that)
And finally you have to make sure the Dining Plan matches up at 4 days MYWDP
I got a total of 1553.74 divided by 2 Adults = 776.87 per day
This website price is 152.87 more than their pin number price of $624 per ADULT per day
You mentioned you were wanting to take your GD. Is she within the age of child rates? If so the website is going to discount the prices for her Ticket and Dining. By using the above methods of calculations their advertising for two adults is a savings but unless you are traveling with two adults and wanting the exact services they are basing their prices on, your pin might not be much of a savings. The email offer states " 'Big Kids' get 'Little Kids' Prices". I feel the promotion is mainly aimed at getting adults in there with the lure of child pricing. In my experience though, I have always found that when I call with a pin, even when changing the package up somewhat from what they are advertising, it is still a savings. My advice would to be deffinately call and see what you are offered for your exact situation. Be ready with lots of notes on your own research so you can compare. Hope my info helps and is clear. Editing to ad that the website discounts also get larger the longer your stay, if you are simply multiplying the 624 x your stay length, you are not gaining these discounts in your calculations. If you call with the pin though, CRO will most likely add these discounts into your savings.