For the past 18 years myself and my wife have mainly taken train vacations together. Next year she has chosen to vacation with her sister and that means I will take a solo vacation. While over the years we have met many solo Amtrak travelers and they seem to be perfectly happy. it would be a new experience for me. Is it fun, and enjoyable, to travel solo? Does it ever give a feeling of isolation or is it always fun. Just looking for opinions before I take the plunge.