Nice, I'd like to see it once its done. I'm working on submitting Dino party as a Gdevelop example right now actually
make a post on the GDevelop forum or something and I will do my best to answer. Of course, you can download dino party here and check to see how it works. Dino Party Example Download
I used tween for it, but you could just use move in direction with a timer to control stopping. Or, move until collision with an invisible "stopper" object