Thanks for the advice, gents. I'm going in May so hopefully the weather will be decent (think I'll be keeping my claes on though!). Having said that, I went to Vlieland in May 2019 (see a previous challenge of mine) and it was fogged in. Still a nice part of the world, the fog just added to the 'end of the world' feel. I know that Sylt is a bit more developed tourism-wise than Vleiland though
