We took Lily when she was about 3 or 4 months old and she loved it! Of course, I don't know how much you can call it "camping" when you stay in a nice cabin
, but at any rate... she loved being outside and played at the edge of the river, and she slept around the campfire with us sitting around talking. A great experience! I'd take her back in a heartbeat!
Tip though: make sure you have prepared for TICKS! We found several on Lily (never attached), but luckily had prepared by using Revolution beforehand.