We leave for Disneyland on Tuesday so I'm looking at the photpass+ for a week. Do I need to buy before we leave or when I come back? Does it matter either way?
@katyringo is correct, but if you are not interested in Genie+ and do want PhotoPass, it is possible to purchase PhotoPass as a seperate add-on. You can have PhotoPass without buying Genie+
This is what we are doing, getting genie+ for five days and photopass is included. I think it makes up for like 25-30% of the cost depending on how many of you there are.