24 hours is definitely not too much! I have that requirement for diahrea and fever as well. There is a terrible stomach bug going around, so I would be careful! My 16 year old has it and it is awful!!! Perhaps saying that the child cannot come back for at least one full daycare day after fever or diahrea would be simpler...I may think about that too...parents will always try to wiggle in there! As for the baby, I feel for you on that one and understand your annoyance but also that the baby is hungry...maybe you could have her sit in an area alone so that she isn't in your area (not sure if you are set up to accomodate this)...a quiet room on her own with the baby. Has she tried pumping and packing a bottle with breastmilk...or breastmilk in a cup? I had a little guy who didn't like bottle, but would drink it in a cup...he would also cry when his mum arrived with the milk, but she just packed him up and off they went.