What is the main purpose of the talk?

Good morning everyone and welcome to Emerald Mountain. My name is Daniel Jackson and I’ll be your tour guide today.(80)Our tour will last about 4 hours and we will hike about 7 kilometers as we stop to see the 2 waterfalls on the mountain.(81)You’re welcome to pause and take photographs during the tour, just make sure not to fall too far behind the group. Also, please don’t venture off the trails as it’s easy to get lost because of the dense forest. I will be sure to take extra time at the most scenic points of the tour. Now,(82)I suggest you use the restroom before we leave as there aren’t any public restrooms on the tour. Oh! One more thing, please refrain from smoking anywhere on the mountain. Let’s meet back here in 10 minutes to start the hike. Any questions?