If Hawaii or a Caribbean destination is too far or expensive for you, consider the Keys. Many people go there for comfortable temperatures around the holidays. For better prices, consider renting a condo. The Upper Keys have a more relaxed vibe, according to reviews. Go swimming with dolphins, snorkeling, kayaking and parasailing. The more adventurous of you may want to try primitive camping, but you have to reserve your spot in advance. Don’t miss the annual Lighted Boat Parade, a uniquely Key West extravaganza.