The island is about a mile long and maybe 200 yards wide and all the roads are sand, hence there are no cars on the island. Every where is walkable,if you have luggage you can get a golf cart taxi or many places rent bikes.
Other than walking, bicycling is the most popular mode of transportation on the island. I’m talking old-fashioned, one speed bikes, where you hit the brakes by pedalling backwards instead of squeezing the brake on the handlebar. Many hotels have them for their guests to use for free, and numerous places rent them. You'll fit right in this way.
You'll see many people riding with a litle child on the handlebars - even children on bikes will have smaller children riding with them sometimes. Our hotel bicycles were a godsend to me, since I had recently fractured a bone in my foot about a month before this trip.
If the locals are not relaxing in their hammock, you might see them biking around. But as the motto of the island is "go slow", they could never be in Tour de France... ;)
Everything is laidback on the island, even the biking! Oh, what a paradise! If you also want to go slow but still want to see much of the island you can hire a bike in many places.