My girl just had her 3-yrs old birthday party there yesterday night. I find the kids all crazy about the 波波池 and the other 機動遊戲. But may be they are too young to follow the 姐姐 to play the group games during the party. So it was a bit 混亂. But overall, I think the kids enjoyed the party.
But one thing to consider is the min. height for 波波池 is 90cm. May be not all 2-yrs old kids can reach this height requirement.