The cross-border bus is only a few minutes late leaving Puno, skirting Titicaca’s shores and trundling towards a checkpoint which turns out to be one of our easier border crossings, just two quick passport stamps and we’re through into Bolivia. Our next destination appears below us down the steep hillside, nestled attractively around a lakeside bay, greeting us with the most biting icy wind we have so far felt on this trip. This is going to need a ramp-up in sensible clothing. The town’s name is Copacabana, our home here is called Sultan Suites, which leaves Barry Manilow and Dire Straits competing for occupation of my ear worm. Our accommodation…