[AnnieK]

Get Gemma to introduce you - she will say either "this is my mum and dad - Fred and Wilma" or "this is my mum and dad - Mr & Mrs Flintstone"

I call my inlaws by their first names and always have and I always introduce my parents by their first names (but they do have a really embarrassing surname anyway so I would never voluntarily give that information up).

Just see how it goes