We just returned and used points for a few days at AKL Concierge for our 10th anniversary. Our sole purpose of staying there was to do the sunrise and sunset safaris offered only to AKL concierge guests.
You get the usual concierge service, which includes a keyed lounge (actually the entire 6th floor is keyed) with snacks and beverages available all day. The staff there will make priority seating or any other arrangements you need. They even made PSs for days after we were moving to BWV for us! You also get checked in by bell services right at your car or in your room, get your keys right there and they walk you up. NO waiting in the line at the desk, which was nice. Many of the concierge rooms are on the 5th floor at AKL, and be aware that some of the concierge rooms are NOT savannah view (I believe these are all smoking rooms). We've stayed at AKL before and had a comparable room to what we've had, but with a free mini fridge. Supposedly you get robes (according to the literature) but we didn't. Don't know if that's changed or if they just forgot. It wasn't a big deal, so we didn't ask.
To us it was well worth the points for this one trip just to experience the special safaris (be aware there is an extra charge for them). To our surprise, we much preferred the sunset safari. It is a smaller group and limited to adults only. There were only four of us on our tour. You go out in an open-top van on the AKL savannah with two keepers for nearly two hours and see lots of animals up close and personal. Afterward, your group has a fabulous dinner at Jiko that is a kind of sampler highlight menu for each course. The chefs come out and bring the dishes, then explain them all to you. It comes with wine pairings as well, but if you don't drink they will make arrangements.
The sunrise safari was neat, but not something I'd do again. We had a large group with lots of young children. We filled two of the regular safari vehicles and had two guides. You meet up in the concierge lounge at 7 am, get on buses and go over to AKL, entering backstage. You then load into the safari vehicles at the regular loading area of Kilimanjaro Safari. You go through the safari with a guide and driver, stopping for photos and discussions as you go. They also don't do the usual poacher storyline. I was a bit disappointed that more animals weren't out. The elephants weren't even out of their backstage enclosure when we went through. It was nice to stop and get photos, but not the experience we hoped.
After the safari (about 30-45 minutes) you enter Tusker House in the park for a private breakfast buffet. The food was very good.
Is it worth the points? Well, it depends on your view but to us it was worth it to do this just once. We probably wouldn't pay the cash to book the room and we wanted to do the safaris. We would definitely do the sunset one again, but probably not the sunrise. For a one-time experience, it was definitely worth it.