I took the kids here for the day as they desperately wanted to go to a water park, but I personally wasn’t in a water-park-swimming-costume-wearing type of place!
We got the Circle line on the MRT and got off at Stadium. A word of warning, Google maps then told me to take exit B and walk all the way around the front of the stadium. This is completely wrong! Take exit A and the mall is right in front of you.
The mall itself isn’t particularly huge, but it does have a big Fair Price Extra where you can stock up on water and snacks, it also has a variety of eateries.