Yes, there are many factors. One trip to a trade show I decided a car was more hassle than benefit and went entirely with an airport bus + walking. That meant a couple of walks of a mile or so but I do think I made the right choice. I always wear good walking shoes (I wear a 13EEEE and even then it's problematic. A running shoe has a reasonable chance of fitting, a cross trainer occasionally will work, nothing else ever has.) and the weather was good. Previous experience had taught me parking was a hassle.