I'm at Cipriani with Serena Cook of Deliciously Sorted Ibiza; she is the island's queen of concierge. She started out as a private chef for 'a friend' (Jade Jagger, Google tells me), before setting up her company and a separate villa rental business. Clients have Cook on her toes all year round. 'This year, parts of the island have really become a superyacht car park', she says. She's been getting a lot of calls from clients who tell her: 'We usually book St Tropez, but...'