Plucka Duck is not a real duck. He is played by Simon Lefebvre, who at the time was credited on Hey Hey It's Saturday (1971) as "Plucka's Trainer".
Shot at Warner Brothers Movie World, in Queensland, Australia, over a two-week period while Hey Hey It's Saturday (1971) was broadcasting its show from there in a promotion for the newly built --at the time--theme park.
Features scenes from rides that have since been demolished and replaced. The Gremlins Ride, The Wild West Stunt Show, The Police Acadamey Stunt Show, Gotham Hall and Young Einstiens House Of Gravity.
The movie on the screen that Rick and Artie are watching was the actual 3D movie that was shown in the Roxy Theatre until 2002 when it was replaced with a 4D experience at the theme park.
Clint Eastwood appeared on Hey Hey It's Saturday (1971) during their stay on the Gold Coast and was asked if he would make a cameo for the film but didn't have time.