Traveling alone doesn't mean you need to be by yourself 24/7. Check out sites such as Viator.Com or TripAdvisor.Com to book a walking tour, see a show, or take a side-trip, where you can often book last minute. If you like to plan ahead but want to leave room for spontaneity, book in advance and you usually have 24 hours to cancel without a penalty. It's a great way to let someone else help organize an excursion while either hiding in a crowd or meeting some new friends along the way!