Hi Tara, we took the RS South of France tour in May 2014 and had a great time. From reading some of the reviews, I got the impression that there wasn't much to do in Sarlat. I had also given some thought to what we were going to do, should we rent bikes or figure out a way to get "out of town" for the day? Well, none of that panned out, and we discovered that we loved Sarlat!
Like the earlier poster, we spent the better part of our free day at the market. We also wandered around the back streets and took lots of photos. A boat ride and picnic were on the itinerary for the next day so we shopped for what we were going to have for lunch. The hotel provided boxes and refrigerated everything for us (duck sausage, fruit, wine, candy). Our tour guide also arranged a game of boule at 5 p.m. for anyone who wanted to show up. Everyone showed up!
There are many nice restaurants and bars in Sarlat, our guide pointed some out and some we found ourselves. We had a group dinner at Le Regent Restaurant. I chose the foie gras, duck, and walnut cake for dessert - it was the best meal I've ever had in my life.
I hope you enjoy the tour (and Sarlat) as much as we did!