You have to admire the brazen chutzpah with which this 80s jukebox musical attempts to ape the bizarrely successful formula of Mamma Mia!: a sun-drenched island, a holiday romance, a selection of poptastic hits crowbarred into a contrived narrative, some dodgy singing – all delivered en route to a singalong showdown at the chapel of love. Things start alarmingly as breezy Hannah Arterton is asked by a customs officer for the purpose of her visit. "Hol-i-day-ee!" she chirrups in Madonna-esque reply, setting the tone for what is to come. The dialogue is terrible ("There we were on the beach, covered in tomatoes, and I just… knew!"), the acting variable, and the mouths either fixed in cracked smiles or wide-open astonishment (Greg Wise's perma-guppy lingers). But StreetDance directors Max Giwa and Dania Pasquini make sure the whole thing goes off like a fizzy-pop hen night, and you may find yourself tickled, providing your toes don't curl up so far that they actually stab you in the heart.