I know exactly what you mean Margaret, I'm the same, given the choice. It takes a series of huge deep breaths for me to walk into anything 'social', even when it's not necessarily strangers, and when I do do things like that, I'm much happier to grab a corner and just listen and observe, but as you'll know, that's not always possible. I have to call on my 'public persona' to get through it, but yes, it does take effort!
(I'm pretty sure that will come as a shock to those I've met up with so far through SSiW, but I keep the offer of a 'panad a sgwrs' open because I feel I do need to practice 'fight' rather than 'flight' - so anyone else reading this who is near Caernarfon anytime and wants a meet up, please don't think you're not welcome to do so - you are worth it!)
So Margaret, if you do fancy a meet up, just the two of us somewhere quiet, let me know and we'll see what we can up with, but certainly no rush, and definitely no pressure!