What should you know? Well, registration starts at 8a, behind the Mocha Building where the Juried Arts are, just off University Drive on the East end, before the bridge. The parade starts at 9a, proceeding west on University Drive, toward downtown; then turning south, up Maxwell Street; finally going east toward Page Avenue to the South Stage, where awards are given at 9:30a.
Or, ya know, if all that sounds too confusing; you could just follow the 'Piper! The Celtics always get you and your lovable furr~friends to where you need to be. More details here!