My January break was a designated Singles holiday and we were a group of twenty-seven....21 women and six men; I don't think men find it easy, as you say Rowan. Many of the women went in pairs of established friends, others alone like me but made to feel welcome. Or I could choose my own company/space.
The Austrian holiday was not a Singles, I can't remember the headcount of the group, but half were married couples, the other half 'like us'. Several pairs like Pat and myself and also four ladies on their own, but always drawn in by the others. There was one sole gentleman in his eighties who had brought his female neighbor.
Viv