Hello, Rochelle!
We're planning on heading to Walt Disney World later this month with a party of 11, and PhotoPass + is exactly what we'll be using.
Click on over to
Disney's PhotoPass website, where you'll find more information about several PhotoPass options. All of them, however, work with your own Disney's PhotoPass account, which acts as a sort of virtual holding area for all of the PhotoPass cards you add to that account. This way, you can allow members of the group who choose to travel to different attractions and parks to pick up complimentary PhotoPass cards, adding them all to your one account later on. Forgot your PhotoPass card back at your resort? No worries! Pick up another when you get to a park and simply add them all onto your account.
If you're on Facebook, there's a great, official PhotoPass+ Group which includes a lot of information about this plan as well. One of my favorite unofficial sites, allears.net, also includes some helpful information about PhotoPass +.
Please send more questions as you think of them! We love to help!