You definately want to have your dining reservations firmly in place. Since the dining plan (which is great) has started - it is nearly impossible to have dinner in a sit down venue - without a ressie. Unfortunately, I'm not at WDW yearly as many other posters are (so sad!) - but I can tell you that. If you have small kids (under 10), personally, I would just go with the flow and eat at the "fast food" places.