Visiting Parma, Bologna, Orvieto and Rome from Dec 27-Jan 7. We plan to dine primarily at the types of less touristy establishments recommended by posters on this board, as well as our Slow Food Guide and Plotkin's Italy for the Gourmet Traveler (thanks to this board for sending me to this great resource, I love this book). Can anyone give a general guideline as to how far in advance we would need to make reservations - if at all - for lunches or dinners? Again just looking for general advice here. Thanks.