Timekeeping. It's one of those things - like playing polo or waxing your own bikini line - that sounds dead easy in principle, but is fiendishly difficult in practice. Messier than expected, maybe, and way more painful. Timekeeping on holiday? Worse. Not the practical stuff, like being on time for a flight, although that's bad enough. I'm talking about making the most of every second you're away. That's tricky. There's the worry that you'll make the wrong decision. Stay by the pool and order another Aperol spritz, or hike up that massive volcano? (The answer, by the way, is yes of COURSE you should order another drink, and sure, do climb that volcano, but tomorrow is fine too.) Don't worry, we've got all the answers and picked out the world's splashiest, most gorgeous hotels. On you go. Get out, explore! Or don't. But maybe leave the polo to Prince Harry, and for heaven's sake get yourself a good beauty therapist.