When deciding what items to take with you to your hotel, think functionality and comfort. Non-restrictive, casual clothing is ideal. Along with robes, many hotels supply slippers. However, if you're joining an exercise class, pack your favorite trainers. Hoping to soak yourself in the hot tub or enjoy a dip in the pool? A swimming suit is essential. While spending all day kicking back in very little can be liberating, keep in mind dress codes may apply if you're at a first-class resort. Pack a stylish outfit in your bag too — just in case.