Princess Peach and the Wild Weekend (hardcover)

Worst weekend EVER.
It's Saturday, but Princess Peach is miserable. Instead of relaxing, the whole kingdom of Verdonia is preparing for a visit from the most terrible of visitors: Prince Terrence of Tarragon.

Peach can't stand Terrence! But he's going to marry her oldest sister Princess Posie, so she'll have to get used to him sooner or later.
Or will she?

Armed with a strange, fizzy red candle, a bag of lemon sweets, and a lot of determination, Peach sets off to sea to find Duke Daniel, the long-lost heir to Verdonia. She'll have to face pirates, mysterious creatures and hairy hermits to save her family, her kingdom, and most of all, her weekend...
Princess Peach book 1. A junior novel for ages 7-11.