More than 1,500 Year Six pupils from all Pembrokeshire schools are invited to the event to learn how to stay safe.
Experts from agencies including the police, coastguard, fire brigade, National Farmers Union and Western Power are there to guide them through 11 challenges aimed at making them think about safety.
"This is an excellent event and it's brilliant the way the experts make the challenges fun while at the same time possibly making the difference between life and death," said Mr Davies.