Thanks for such a prompt reply. Alas, the dates are fixed 15-20 May, so we will have to head to areas that are lower, I guess, but hopefully we can still enjoy some good views.

Again, any guidance on which areas would be best would be useful as I have zero knowledge! I have been advised that Ascona and Locarno might be good - or Lucerne - but this was from non-hikers - so thought I'd ask some!

Best wishes