We took our 1,5 years old to a small water park. He was probably the youngest there. But he was so extremely brave and did yeverything by himself, sliding down the long slide, going under the water fountains, running and falling into the water, etc.
There was a boy perhaps double his age who was very caucious and held on to his granddad's hand all the time and so on. You could see that he was kind of embarrised when he saw our boy doing every thing by himself and having so much fun.
So the boy also got inspired to let his grandpa go and try to have more fun by himself. When he was going up the wide stairs to the slide our boy was faster and wanted to go around him. The other boy didn't want that and tried to push down our boy. But instead of whining or crying our boy pointed with his finger at the other one and said: "No!" like he usually talks to our cat.
And while the other boys grandparents also told him not to push others he stopped and they both went up.
Anyway, it's so great to see how our boy learns the social interactions and is so self-confident that he doesn't even need our help in those difficult situations.