We built our itinerary around a week in Valencia, Spain. Sina Ettmer PhotographyI took my wife, daughter, and niece on a five-country Europe trip to celebrate my wife's birthday.We booked most of the flights and hotel rooms using credit-card points and miles.The rewards-booked flights were all business and first class, and the hotel rooms were luxurious.A year before my wife's 52nd birthday, I knew I wanted to do something special to celebrate the milestone.