As you may know, Florida Statutes are available online (this is true for most states).

According to Florida law, a bicyclist riding on the sidewalk or riding in a crosswalk has all the rights and responsibilities of a pedestrian (perhaps not true in all states but true in Florida). Florida law is fairly clear that it is legal to ride a bicycle in a crosswalk (the laws in many states are considerably less clear on this).

As far as right of way goes, if you have the light, you, as a pedestrian in or about to enter a crosswalk, have the right of way. This is true in all 50 states but many motorist do not seem to get it. Motorists should yield and let a pedestrian that has the light go first. But some motorists don't. So exercise caution when claiming your right of way. Being right is not worth getting hit.

Where bicyclists acting as pedestrians are most likely to screw up is in entering the roadway. A pedestrian is prohibited by law from entering the roadway suddenly.