My 3 kids ages 13,11,8 at the time went there and spent 6 hours until the place closed.
We had planned to spend the day at the WEM, had gone to the amusement park and spent 50 bucks there. Then saw this place. We had not heard about Kidtropolis until we walked up to it. The other kids there we could see were having a great time so we pd for 3 hours for them and they had a blast, working, earning money, spending it and playing around at different professions. After 3 hours, we came back and the kids wanted to do it again, so we did. After 3 more hours, the mall closed and we had to leave. We walked around inside the area and the kids showed all they were doing.
3 years later they remember it as one of the funnest things they ever did