Solo, Shark Valley (Everglades National Park) works.
The authentic Everglades — a flat loop you bike or ride by tram past wild alligators basking trailside, wading birds, and a tower with sweeping 'River of Grass' views. The catch: it's about an hour out, the full loop is long and shadeless, and it lacks the speed-thrill some expect from an 'Everglades trip.'