You can eat both raw and cooked - there are benefits to both. There is only one thing to say about this diet THIS is a miracle diet for anyone. You can have a glass as long as it doesn't affect your progress.
However, consuming one serving of "starchy" vegetables like potatoes, yams or beets could put you over your entire carb limit for the day. It is not very hard to make most restaurant meals keto-friendly when eating out.