I will be on vacation in Gatlinburg for the week of Thanksgiving. I will be vacationing with my husband and two kids (ages 7 & 17). We would like to go horseback riding and ziplining. I was wondering which are the best companies for us to use. Also, we want to go see quite a few of the waterfalls. Any suggestions, on the best ones? Please keep in mind we will have a 7 year old so it can not be anything too long or hard.