Just starting to talk about our vacation for next year. I would love to go to Yellowstone National Park. We would fly from Michigan, where should we fly into? What is the best time of year to go? What area or town would be best to stay in? Any recommendations on hotels or cabins? We would plan on renting a car. Is 1 week too long/short of a time? We are in our late 50's but love to see beautiful scenery, wildlife and hike. Besides YNP what other areas would you recommend? Thanks for helping us make a memorable 2014 vacation.