Hi there! DH and I just booked our first trip to DC; I'm so very excited! Bonus is that we get to visit Sea World and Aquatica; I didn't expect that to be included! I'm still learning about DC and everything that is included. I can tell I will be just as nerdy with my research and spreadsheets as I was about Disney last year What kind of options are there for the photo CD for DC? Can I buy it ahead of time like you can the Photo Pass? Is it worth it? TIA for the help!