Hi Angie,
You are correct! Disney PhotoPass Photographers are happy to take your photos in many locations throughout Disney Parks. You have a few options as you go from there.
If you purchase Memory Maker 3 or more days in advance of your trip, you will get a bit of a discount. This is the best value if you know you want all of your photos and attraction videos. However, you always have the option to purchase Memory Maker after your trip for the same access to your photos and videos at the full price.
Finally, if you simply want to
purchase one or two PhotoPass photos, you may do this individually as well. It's really up to you!
Remember, you'll want to make sure everyone in your party is linked in your My Family & Friends section of your My Disney Experience account so you have access to everyone's photos.
Please let us know if you have any other questions, Angie. Wishing you many pixie-dusted memories on your upcoming vacation!
Andrea U.