I've been going to Seaside FL (http://en.wikipedia.org/wiki/Seaside,_Florida), one of the early NU towns for many years, and just had my wedding there.

The highway 30A coast, which includes Seaside has at least four examples of New Urbanist towns within a 20 mile stretch that is all bike-able. If you're into this kind of thing, it makes a great vacation spot.

If you want activities or restaurant recommendations, check out my wedding website which is still up: http://mattandmeara.com/more/