I can't help with the GF information.
I pre-ordered the photopass CD. Don't loose the e-mail with the online code they sent you because you'll need it when you get back. You don't actually get the CD until after your trip.
When you get there, find the first photopass photographer you can find and get a photpass card. Everytime they take a picture they will scan the card. When you get back you log in to the photopass site, enter the numbers on your photopass cards and voila! there's all your pictures!
You can edit them as much as you want before ordering. Just remember that you have 30 days from the day you get back to order the CD. When you're ready to order the CD you'll put in the code they e-mailed you and it will be zero due.
I just got my CD last week!