Acting as an Adventure Travel Expert, create a 7-day itinerary for a traveler seeking to experience the Northern Lights in Iceland. Recommend the best times of year to visit, locations for viewing the lights, and alternative activities like glacier hiking, hot spring visits, and exploring Reykjavik’s cultural scene. Provide tips on cold-weather gear and how to maximize chances of seeing the Northern Lights. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>