Want to know where people drop the most bucks per day on their vacations? Why not--one would guess you'll also probably spend the most per day per attendee there as well, since the main factors are hotel rates and F&B. The answer is, no big surprise, Hawaii, at a whopping $518. Other high-enders include D.C. at $441; Rhode Island at $307; New York at $307; and my good old Massachusetts home base at $303. If you're looking for super-affordability, check out Nebraska, which came in at the least expensive at $184.