Hi Cindy,
How exciting that you're visiting Walt Disney World for the first time, be sure to ask for a First Visit pin when you check in or at the parks.
The PhotoPass CD can be pre-purchased at any time before your trip starts, so you're welcome to order it now or wait until the day before you leave. I normally order it a few weeks before my trip just so I don't forget! I think pre-purchasing is a great thing to do as it saves you 20 percent on the regular CD price and there is a full money back guarantee if you decide you don't want it after your trip. You can pre-purchase using this link
HERE.
To get the most out of your PhotoPass you will want to stop at as many PhotoPass photographers as possible. If you have a look at a website called
www.stitchkingdom.com under definitive guides it will show you what the photographers look like and where you should expect to see them. There are also several special photos you can get taken, my favourites are the one where it looks as though you're holding Tinker Bell and the one near the Pirates of the Caribbean ride where it looks like you're fighting Captain Hook. Both of these can be found on the Stitchkingdom website.
Hope that helps and I'm pleased the Mom's Panel has helped you in the past,
Jo