Thank you all, very friendly and very clear.

The kids had a great time playing at Kidzilla Sunter Mall. The place is clean, there are plenty of games, and the staff are friendly.

The staff is very friendly, the service is very good.

So far, I haven't received any solution. They said buy 3 get 1 free. As far as I know, that means I have 4 tickets that I can use anytime. It turns out the 4 tickets have to be used on the same day. Traveloka didn't provide any notification that they have to be used on the same day. I've called Traveloka, but as of this writing, there's been no response. So my bonus just disappeared. I regret playing at Kidzilla, which is a small place.

It's very safe to bring children to play here, it's not too crowded even on weekends