I didn't like this book at all. It's about two young women going abroad for an adventure, then acting in an irresponsible way, in essence behaving like a pair of chavs. Nothing funny in that.
For example, they were given generous help by strangers when in big trouble, then repaid this generosity by getting blind drunk on the family's store of beer and damaging the house.
I hope that lovely family don't think this is typical of Brit conduct.
Surely, if you act in such a disgraceful way, you keep it under your hat, not write a book detailing it all.