Flirting with the idea of doing the Dunn's River Falls tour in Ocho Rios in October. Wondering if anyone has done this and how difficult it actually is. I am a 45 year old female with no major health issues. During the past 1.5 years, I have lost 55 pounds. Currently weight about 165. My exercise regime consists of walking only...3.6 miles per day, five days a week. Any advice appreciated.