In the chase across the carnival, Didi's blue jacket gets stuck in the fence, however in the next scene he's wearing it again.
When Didi falls in the fountain basin, there can be seen five people sitting on two benches nearby, watching it. Few seconds later, as he raises (soaked all over), the people have disappeared.
The final battle between Didi and Emilio on the roller coaster is supposed to occur at a carnival in Berlin, however the rear-projection shows footage from Oktoberfest in Munich (the 'Bavaria' statue is clearly visible in the background).