By Katie-Ann Gupwell When you’re going on holiday, packing a suitcase is never an enjoyable job. It’s long, tedious and it can be frustrating to try and fit everything in. Not to mention, trying to ensure things travel without getting creased is tricky business. What’s worse is, some hotels don’t allow irons, so that can really land you in a spot of bother. There’s no need to worry though – as there are some tricks to use to ensure your best outfits stay as crease-free as possible. Over the years, there have been many theories as to how you can pack your suitcase in a way that ensures you won’…