A Friday and a Shabbat with places from the guide, chosen by how close they are to each other. Not a ranking: a way to get around the city.
Shabbat candles: Friday, 10/23, 5:42 PM
Around Koh Samui
Late morning
Ask ahead whether they welcome visitors and when.
Friday night · candles 5:42 PM
Many Chabad Houses welcome visitors for Friday-night dinner: write ahead to confirm.
In Koh Samui, all on foot
Saturday morning
At the same place as Friday night: Chabad of Koh Samui.
Saturday night · Havdalah 6:31 PM
24 m on foot
Many only open once Shabbat is over: check their hours before you go.