Check in for the trek is located in Harambe, next to the entrance to Kilimanjaro Safari. Make sure you arrive a few minutes early for your reservation time, as you will be touring with other guests, and wouldn't want to hold up the trek. (yes, there was a woman who showed up ten minutes late to ours...) Close toed shoes are required for the trek, and NO DRESSES OR SKIRTS. (yes, someone showed up in flip flops and a skirt...no kidding.)
After check in you will be suited up in a snappy utility vest and harness with the help of one of your tour guides. Your trek "outfit" also includes a branded metal water bottle and name tag which are yours to keep. The vests are fitted very snug and tied around your crotch...so maybe not a good day for you to wear skinny jeans unless you're cool with everyone seeing your junk.
From here your group (usually 10-12 people) are lead by two upbeat and friendly tour guides through the Gorilla Falls trail on your way to the Kilimanjaro Safari stage. Like other Disney World tours, everyone in the group is outfitted with an earpiece to hear the tour guides speaking clearly, regardless of distance. In the case of Wild Africa Trek, one tour guide speaks while the other snaps high quality photos, and they switch roles often.
Though the time spent in Gorilla Falls was fun, the real adventure is at Kilimanjaro Safari. After walking on a trail behind the main stage, our first animal encounter was with a hippo. Here you are tethered via carabiner, and allowed to get VERY CLOSE to the drop off into the hippo pool. At this point a zookeeper appears to answer any questions about the animals. He was very knowledgeable about these animals and took with each question. Oh yeah, they also entice the hippo with heads of lettuce...totally adorable.