We went last year as well and hopefully we won't need too many day trips if the weather is good enough, but just wondered if there is anything we haven't done.
Last year we did Velorail, which was fantastic, cycling on special bike on old railway lines, the caves where you go on a boat to see them DS loved this and some not so successful trips to see prehistoric cave drawings and some poor bears.
Can anyone recommend anything else, we are staying just outside Sarlat ? I saw that they have some lakes with artifical beaches and thought that would be good if the weather was nice.