I am thinking of bringing my family to the Smokeys in late March for a four day getaway. We were thinking of hiking, Titanic museum and any other family activities you would suggest. Thinking about renting a cabin. Kids are 12,14,14. What's the temp in the spring there? Any help is appreciated greatly! We would be driving from Chicago and are thinking about taking a day to spend at Mammoth Cave in Kentucky besides the 4 days in Gatlinburg/PForge. Do you have any advice re MCave? Thanks again!!