Vacationing in the quietest months of the year, February, March and November, has its advantages — think cheaper hotels and airfares and less bumping elbows with hordes of strangers. But there's an undeniable magic in the air during the high season. More events will be on and more attractions will be open in May, June and September. If you're trying to save, has the cheapest hotel prices. You'll pay a lot more for a bed in .