I would be interested in views on a couple of questions:
Firstly, do many nurseries use one room as a sort of early arrivals and late departures waiting room for children of all ages (including crawling babies and lively toddlers) before they separate out into their own rooms or are collected by parents?
Secondly, how worried should you be if the child to carer ratios are not always adhered at the beginnings and ends of days?