When service is indicated as having been included, i most often do not tip more--unless the service was particularly phenomenal or personalized in such a manner as I think warrants additional tip. That definitely was the case for me at Geranium, where they opened a special bottle or two of older vintage wines for me because I had questions about the pairings and choices. My pairings at Geranium were some of the best I've ever had. (L20 in Chicago this past May was another example of amazing wine pairings.)