O dear! knickers well & truly knotted!
In response to the original question, it can be tricky to eat out but its not impossible and I'm sure most of us here have done so quite successfully without breaking the diet irrovocably. If its with close friends, hopefully they know you are dieting and will be sympathetic: I went on a picnic in the summer with friends, so I just made sure I took stuff I could eat and had little bits of their offerings so as to be polite & sociable. They actually quite liked my stuff too!
In restaurants, I usually just go for the plain steak, fish or chicken, and ask the waiter to go easy on the sauces. If it comes with fries - which I have to say I find really, really tempting - I have one or two and then pass them around for general consumption. Although I do confess I had moules frites on my birthday....je ne regrette rien!
If I know that there will be very little I can eat, I have something protein rich before I go and then I won't be tempted too much.
This way I've managed to go out as much as I would normally, and still kept more or less within Dukan rules. The only really tricky bit was over Xmas when we were away from home for 3 weeks.
I would be the first to acknowledge that this diet is not for everyone and it requires a degree of committment and open mindedness for it to succeed long term. But I'm happy that its working for me, and equally happy that I can try to offer help to others on the same path.
I hope the visitor from SW is happy with her present choice (although one does wonder why he/she lurks around Dukan if so?!) and more importantly for her sake, is sucessful with it.