I agree with redmouse 710 about the plastic utensils; It would seem unreasonable not to offer utensils with a meal. As for plastic bags, we reuse them for everything from taking lunches to school/work, ad hoc deep conditioning caps, tie up soiled diapers, dispose of garbage, etc. We typically use reusable bags for about 70% of our goods, and that last 30% that requires plastic bags, is where we rely on reuse. Also, most stores around us offer plastic bag recycling recepticles.
It's a good idea. We only get one Earth and we should take care of it. So what! Plastic is convenient yes but at the cost of the environment and our health. As far as utensils, either wait until you get the food home or est in the restaurant.