Tenby beach is fab, we have made sandcastles in wellies and waterproofs in the past.... Fish and chips in Fecci's on Lower Frog Street followed by an ice cream sundae in the other Fecci's round the corner, then a horse and carriage ride courtesy of Mr Ed then pottery painting down the street.
Manorbier Castle has the funniest waxworks I have ever seen.
Freshwater East is a lovely beach for walks, and rock pools at low tide, and the Freshwater Inn does decent food.
If you fancy a mooch in a town, Narbeth is sweet and has lovely cafes and independent shops.
Pembroke Castle is great.
I love Pembrokeshire....