When deciding what things to take with you to your hotel, think functionality and comfort. Casual, loose-fitting clothing is an ideal choice. As well as bathrobes, most hotels supply slippers on arrival. However, if you're taking a fitness or yoga class, pack your favorite trainers or sports shoes. Want to hop in the steaming hot tub or make use of the pool? Swimwear is a must. While spending all day lazing around in very little can feel liberating, keep in mind there may be a restaurant dress code if you're at a first-class resort. Throw a stylish outfit in your bag — just in case.