We recently came back from malaysia, s feeb said, bottle water is a definite.
Fruits should be fairly easy to get.
You can find veg but they're prob not the usual broccoli etc. more Asian veggies.

Coz of the weather & humidity you might find baby wearing uncomfortable.
Huggies are easy to get, but they're not as absorbent as the ones here. Sizing isn't exactly the same either. So you might need to do some trial and error.

When u get nappies @ supermarket, get tissues and wet wipes. Don't expect toilets to have paper.

Food wise there usually is something for DD (18mo). If in doubt order freshly cooked stuff.

There's also a bit of hand foot & mouth going around at the moment. We just wiped the table etc before DD ate. Not sure how much that helped but more for our comfort.