I went last yea,r as a few others of us. Solid outfit. Accommodations and food were very nice considering how far out in the boonies you are. Not sure if you have ever done a "communal" hunt but it was my first. I was taken back by the number of people that we encountered during our hunts. It was a great experience to see how they lived but I never got used to it while we were actually hunting.
You're not going to see hundreds of animals per day. Most of the hunting gets done around the lake and Ume River, which means you might spent 2.5 hrs to get to your hunting locale, although I think they have a spike camp going now in McKenzie (furthest West area).
They have tons of hippo and crocs! Lots of elephant, good population of buffalo, chobe bushbuck, waterbuck and impala. The area isn't know for trophy impala though. Outside that, I think anything else you aren't specifically targeting will be occasional, chance run ins.
For Elephant and buff you should be good. I only saw one bull ele with around 50 lb ivory but we weren't hunting ele either.
D&Y made payment easy and they never sweated over the details. The camp crew is great, but that also leads to a larger than I was used to "tip list" so to speak. But no biggie as most were $40-$50 tip ranges.
I think you can book with confidence.