if you live in hotel, they of couse will provide you boiling pot but not sure is clean and can boil to 100 degree, so better bring one.....
which city r u going?? Jakarta? big city no need to get injection...if really worry get 流感針...just bring 蚊怕器或lotion...but you can get it fr supermarket here....
for the baby food, big supermarket like Carrefour they carry different brand of baby food cereal or milk...if you want Gerber or Hinz can go Sogo supermarket here....don't worry for baby food, remember the everage no of kid in one family is 4-5, so we have wide range of baby things here.....