My daughter was allowed on dragons fury despite be...

My daughter was allowed on dragons fury despite being slightly under 1.2m without being checked. We were absolutely fine with this as it a very minimal.
However we then queued for almost an hour for tiger river another 1.2m minimum ride with the thought it would be the same outcome.
Alas this time we were checked and she was not allowed on, we spoke to management who were adamant she should've not been on allowed either ride.
The tiger river is far less thrilling/high octane than dragon fury.
It was very disappointing as there was no consistency shown.
It would've been a nice token gesture to be allowed to the front of rainforest river (young child's version of tiger river) however even after asking another member of staff and explaining situation it was still not possible.
I understand they're doing their job and covering themselves in event of accident, but the lack of empathy and diligence to the situation was disappointing I have to say.
It tarnished what was otherwise a nice day out.
All over a matter of a few centimetres!