I've got a group of people I am helping to plan trips for. Including my trip, there are 4 of us. Will it work to combine Photopass Cards if one is arriving November 26 and leaving December 2 and the last person is arriving December 19 and leaving December 24? Will there be only a couple days after the last one gets home to enter them all in and look at the prints? Or will be be able to enter them on the 25th or 26th of December and then have 30 days to view them before we have to order the CD?