Our 3 kids under 3 loved it. Lots to do, plenty of...

Our 3 kids under 3 loved it. Lots to do, plenty of different activities to cater for each individual child. Very safe and easy to supervise kids roaming around. Was fine for 2prams as we left them in the central walkway while kids went off to each exhibit/play area on the side.
Cafe had plenty of choice for lunch.
90minutes is good amount of time.