Supporting the previous reply... Yes, have the group split up, you can have multiple cards. Just remember that you need to add all these card to only ONE photopass account.
Personally, my family had one photopass card from the Grand Floridian Photo Session, one we used in the parks (which included my daughter's Bippity Boppity Boutique - during her makeover, in the rose garden, and inside with the white backdrop - we continued to use this same card all week. We also had pictures from CRT (code located on the corner of the picture), Chef Mickey (code), and Arkushus (code). Also,
MNSSHP pictures on a card (Since I pre-purchase the CD, I also added these picture onto my ONE account). Almost forgot, I had three more photopass cards from the waterparks.
So you see, you may add many pictures onto your account. We had about 275 pictures! After borders and cropping, we had about 1000+.
MOST IMPORTANT... Go ahead and stop by the photoshops at Disney to view your photos before you leave. You want to see them and make sure they look as wonderful as you hope. You can do this as many times as you like while at Disney.
MY SUGGESTION... Don't upload the photopass cards to your account until you get home. Your 30 days start the first time you enter a card. I was very tired after our vacation. Luckily, I waited two weeks before I entered all of my photopass cards to my account. Then, I had 30 days for editing. And if you plan to take advantage of this wonderful option. I needed all these days to crop and add borders.
You have thirty days to claim your photos taken at Disney. Just remember this and you will be fine.
Precaution...I did have one problem, but I emailed the photopass team (directions on photopass website) and after they understood my problem, I was resolved. What happened was...only one code was issued at Chef Mickey for the family before me AND my family. The first family claimed their photo (and mine!). So, I couldn't add the photopass number to my account because the number was already claimed. At first I was frustrated and upset. After emailing photopass, they explained that they while the card could not be claimed my more than one account, the pictures could be manually added to my account. Hurray! It worked. I just had to be patient.
Hope this info helps. Enjoy your vacation... Don't for special picture oppunities like holding tinkerbell and holding simba at AK.