My 19mo toddler is going full day childcare soon. Is there anything I should take note of? Should I accompany her whole day on her 1st day?

It depend on your child. she will take time to observe the new environment and new faces. for my children's childcare, principal allows parents to accompany our children for half day on 1st 3 days. then slowly we drop off the kids for half day for next few days till the kids are ready for full day.