On a Saturday I usually have either an Indian or Chinese take away. That being said, I do make SW chips to go with it and usually pick something that I know the syns for.
Although I know it is not advised, I save so many syns everyday, then on a Saturday I add them to my daily 10-15 allowance to have a treat. I have lost nearly 6 stone in a year, so I guess that even though it's not always advised, it has worked for me.
I would say, as long as you don't go bonkers you'll be fine! x