Does it count?

I'm wondering if being able to climb all the way to the tip top of the play area of Burger King is a milestone... I'm thinking that even if it's not, it is a huge deal. Today Alex did it. He made it all the way to the top of both sides. On one side there is a huge twisty slide, and on the other a train or as he calls it: Choo choos. He went everywhere. I was really proud of him. So I guess I need to note down in his baby book that at 21 months, he made it to the top. That way his brother or sister will have something to strive towards..haha.