We've only stayed at AKL concierge once and it was 5+ years but we loved it so much we are going back in August! I'll do my best to describe it although I'm sure someone more experienced can chime in as well.
It has the standard amenities that all Disney concierge has: help with ressies, food and beverage service throughout the day, turn down service and a private lounge to relax in when you're tired of your room. We've stayed at concierge at BWI, GF and Grand CA in Anaheim and we think AKL was by far the best. I know CMs working during your stay make a big difference, but the food was also best at AKL concierge. We love the morning smoothies and the self-serve espresso machine. AKL concierge guest also have access to the Sunrise Safari and Breakfast. We didn't do this last trip because the days it was offered didn't work out for us but we won't miss it this time. Also, with the recent construction of the AKL Villas all concierge rooms now have a savannah view (we triple checked this with guest services).
One drawback, also related to the construction, is that the concierge rooms are now on the 4th floor while the lounge is still on the sixth. This isn't huge for us, but it may be a concern to you.
I can't think of anything else. Please, someone else jump in! I also understand there is a Sunset Safari but this isn't necessarily reserved for concierge guests only and since I do not know much about it I won't try to explain it.
Whatever you decide...have a great time!
