People who have never traveled alone often describe their first solo trip as an almost religious experience. To take in new surroundings unfiltered by the prejudices, tastes, or preferences of a traveling companion can be heady stuff. Solo travel gives you the chance to indulge yourself fully. Of course, traveling alone has its perils too-such as safety concerns, loneliness, and the dreaded single supplement. But a little preparation and common sense can save you money and get you through the rough spots.