Hampstead theatre, LondonNeil D'Souza's sharp script is packed with regret and affection as old bandmates get together to relive the glory days on holiday Grab the beer and sunglasses and get ready for takeoff " this is a lads' holiday to remember. Except the lads on this trip are middle-aged men. They're back in Ibiza after 30 years to celebrate Chris's 50th birthday, relive the memories of their time in a band and …