Good luck Mary, you sound as if you've done well, a few flexible smirnoffs will be ok, especially with your walking. I had a few flexible vodkas on Saturday at a charity do, but did dance a lot too, but that's the only exercise I did all week,
When I went to class last time I followed slimming world, I used to get weighed in the mornings, and not eat breakfast untill I'd been weighed, I used to buy a hi fi bar and open it and demolish within seconds of being weighed