BlueFit offers the opportunity for your children to come and practice their swimming skills outside of their scheduled lesson time. Upon presentation of the BlueFit Swimming entry card, children can enter the facility with a full fee-paying adult. Children under 6 years of age: A parent or guardian is free with the child, the parent MUST be in the water with the child. Children from 6 years of age: A parent or guardian pays entry and MUST be in the centre with the child (they can be a spectator).