Kayaks can be rented from Ærø Kajak Udlejningen in Marstal and delivered to you, but make contact well ahead as it's a small business and the owner isn't always in town.
The multiday Øhavssti (Archipelago Trail) that loops around southern Funen concludes with a delightful 36km stretch across Ærø's countryside, from Marstal to Ærøskøbing and on to Søby.
Over the last decade, Ærø has developed a reputation as the wedding capital of Denmark. Vegas it ain't, but the quaint setting offers romance in abundance and formalities are remarkably easy – a particular attraction for foreigners who might struggle to provide the necessary paperwork elsewhere. Only 24 hours' residence is required here, 'express' weddings can be organised with as little as two weeks' warning, same-sex marriages are fine, and fees for the simplest town hall marriage ceremony start at just 500kr. As a result, the number of people tying the knot here in 2016 was equivalent to almost half of the island's population! Curious? See http://visitaeroe.dk/marriage-get-married-aero and www.getmarriedindenmark.com.