Do for sure bring or buy a bicycle helmet for this island. I was just funning with you Florida Travel Commander. I know you must protect yourself from the sun and being the experienced biker you are, I am sure a helmet is the least of your worries. I would be more leary of crazy people driving cars or crazy dogs running out to bite you. I love some of the Eaton Street Bike Shop helmets. I really like the helmet with a strip of stand up fringe down the middle.
Living in the Florida Keys means having a weed and bug sprayer. I would be glad to help get the weed sprayer unclogged and you can publish this on FLKeysToday.com community pages. The first thing I would do is take it to a hose or sink, then spray out clean with water all parts. Spray water into the tubes, nozzle, and the inside the unit. Get an old towel out and let them dry out over night. The next day, put pure clean inside water into it and pump it up. It will work perfectly!