My son also in Day Creche at day time. It is easy to get diaper rash in that place. It is because the baby taker usually changes the diaper at a fixed time. They may not know your baby has bu bu or liu liu after the fixed time except he/she cry. The other disadvantages is the baby is easy to get sick because the babies are in a room to take care.But you don't worry. The advangages following:
1)The baby learn much things from the baby taker
2)The baby will not scared of stranger.
3)The baby is social.