I did it in 2019. I thought it was great! We had full access to the breakfast buffet at Boma and were given ice cold water in tour-branded reusable water bottles to take with us on the tour.
I lucked out in that there were only 2 other people who signed up for the tour so we all got extra time interacting with the animals. We were able to pet Okapis, feed giraffes and ostriches and make treats for the red river hogs.
They had a photographer on the tour with you and you get digital copies of all of the photos.