Oops, sorry, Steff! I must have missed your post.
I'm glad you managed to finish it in the end. (My aim is always to make my crosswords hard. If people find them easy I consider I've failed but I also think I've failed if people find them impossible!)
In response to your question about how I got on with travelling through the snow to get my jab last Sunday, I got a text at 4.15pm (three hours before my appointment time) to tell me that the centre had closed early. So I've now got a fresh appointment at 5.45pm today. The snow has cleared on the roads so, as long as I don't slip on the pavement on my way there, I should finally get punctured this afternoon.
How's the vaccination plan going in Oz?