The island is called Ormsö in Swedish.
Historically Vormsi was inhabited by coastal Swedes and before World War II more than 2500 people lived on the island. During the Soviet occupation Vormsi was a closed border-zone, where guests could arrive only with government permission. The island's current population is approximately 240 inhabitants.
If you're going by car, make sure you refuel, because there aren't any petrol stations on Vormsi.
Vormsi is best toured by bicycle or on foot. Both bikes and boats can be rented on the island.
The island has several dedicated places for tenting - either for free or for a fee. There are also several guest houses.