I'm not from an island, though I did stay over on one of Toronto's islands for a weekend, during a music festival. I recall that Joni Mitchell, Neil Young, and others were headlining.
Most of Toronto's islands are parkland, currently accessible only by ferry boat or water taxi.
There is, though, a small commuter airport and nude beach at one end. There is a small residential community at the other end.
In the middle there's a small amusement park. There's a firehall --- with a very cute little fire engine --- and a police station etc.
Once a year my church borrows the little Anglican church that is in about the middle of the islands, and has a picnic and service there. It's quite nice.
Champions: Serena and Venus Williams!