It is located in Discovery Island. If you are entering the park, come down the hill right in front of the Tree of Life. take a left like you are going to ITTBAB and keep on walking just a little farther. The turkey leg stand will be on your right. It also sells chicken wings. It is pretty close to Flame Tree Barbecue, really just around the corner.
The Coffee shop is inside Tusker House restaurant in Harambe (Africa). There is a window outside the restaurant that you can order at if you don't want to go into the Tusker House.