Prompted by the sad discussion of baby burned by hot tea...
I coordinate a stay and play preschool. We serve refreshments to parents. We only have lidded cups. We have signs saying hot drinks must have a lid. We encourage regulars to bring their own cup if they prefer to do that.
Yet every week there are parents/childminders leaving lids off, even taking the lid back off after I/colleague asks them to use it.
What to do? I don't want to act unreasonably, but I am I wrong to be really frustrated by this?