When we were there this winter they had a guy renting golf carts just outside the port gates for $60-$80. for the day seats 4
You can see the whole island in 1 hr or less just driving around.
Depends on the condition of the island now what you can see there.
Alexandr Pushkin, Carnival-Holiday, HAL-(old)Westerdam, Orient lines-Marco Polo, Royal Olympic-Olympic, NCL-Dream, Dawn-Princess, ACCL-Grande Caribe, Oceania-Insignia (3), Regatta(4) Marina (1) St Lawrence Cruise Lines-Canadian Empress
Scenic River cruise June 11,2012