Going on a bus trip is nice and you do meet new people. You also, as you said, don't have to worry about parking which can be a real problem if you have any walking or other disabilities that hamper being on your feet a long time. Before I got my new knees, it took me a long time to walk around a large show, as I kept having to sit down for a while. Because of this, I didn't see a lot of the show or all of the vendors because I had to get back to the bus on time. Of course, that was unfortunate, but now I can go on a bus and relax and not worry about traffic.