Kinect Disneyland Adventures

If you are simply following the gold trail through the park and subsequent quests you will be sure to get this.

If you want to speed up the process for this specifically though, head to Tomorrowland and talk with Buzz. He is on the right near the entrance, coming from the main square. Follow these quests.

Buzz's questline will eventually lead you to Chapter Two of Buzz's attraction, where you will be tasked with destroying the signal disrupters; they are the glowing pinball-bumper looking things in the large room at the end this chapter. The attraction is located behind Buzz himself. This is the only mission that doesn't have a clear marker. As noted in the comments, there is no visual cue within the attraction to be sure you're successful. Shoot at each one for a second or two to be sure.

(Note that you can't pre-empt quests; you must complete the quests for Buzz in the order they are given, and progress is not retroactive. Ie. You can't just do the last quest objective and get credit for the whole quest line)

There are quests for Buzz after this one, this is just the one that needed the most clarification in my view; the others are mostly fetch quests or character location quests. The signal disruptor quest leads you into the attraction, but the bumpers you have to hit aren't labeled clearly

You may encounter a quest hiatus with this line (I did Tomorrowland late-game so didn't encounter any). To move it forward, try doing other quests within Tomorrowland, quests for the Toy Story characters at Splash and Thunder Mountains, or by generally increasing your level

You need to finish all missions for Buzz Lightyear and the green aliens. Hardest part was finding the crystals in the Nemo ride (the green aliens request this). This can be found in the last chapter of the ride, take the first turn right, I did not see the crystal but got it anyway.