MaxPass is per day and per person, correct? Correct
And it includes PhotoPass, right? Correct
Does that mean the PhotoPass is only good for one day as well? Correct
How much is PhotoPass on it's own? And how long is it good for? I do not believe that 1 day photopass is available anymore. You can purchase Maxpass for 1 person and then you would get the photopass benefit for your group. ($50 total for your 5 days). There is photopass+ for 7 days but I do not know much about it.
For both options, is there a card or an app? How do use it? You use the disney app to book fastpasses and also for your photos. You line up to get photos with the photopass photographers then you open the app and there is a barcode that they scan. Later in the day your photos show up in the app. You can also ask for a Magic Shot which adds in a Disney character (these take longer than normal to show in the app). You may also be able to get a card from the photographer and then later link that card to your app.
There are 6 of us in the parks for 5 days.