Yes, and no.
Most (if not all) of the character meals have posed photos you take before heading in. With the exception of CRT and Akerhaus, where they're included with the meal, you may purchase the photo package that they bring to your table.
If you purchase the package (or get it for free), there should be a code in the form "EVNT-..." on one of the pictures. You may then add the photos from the session (all of them, not just the one you got the print for) to your photopass account.
If you don't buy the package, though, no photopass.