Any dress tips for men please. We are attending the Magic Flute performance in January. My husband does not want to bring a suit or dress suit all the way from Australia for one night. Would a linen jacket, linen trousers and smart shirt make the grade?

Hi I have been trying to book tickets to a performance at the ROHM for over a week now- the on-line booking site keeps crashing. It processes the credit card authorization, but does not complete the purchase or issue the tickets. This has happened four times now! The box office seldom answers their lines (I think they must only open sporadically) and having sent about half a dozen e-mails I eventually got one sketchy response that did not address the issue. Five days ago I finally got hold of someone who assured me that he'd made the reservation and I'd receive an e-mail, but nothing as yet. Very frustrating as I really want to visit the opera whilst I'm in Oman in January. Has anyone got any tips or fixes to suggest?