One of the issues and communication problems we had at AKL in December 2010 is that Valet told us to use the shuttle for our Sanaa ADR, but NEVER told us that it stops running after something like 9pm. The Valet people were absolutely confused when we finally got back and shared that tidbit with them. They had no idea.
Hopefully they are all better informed now. But if your ADR might run on the later side, ask the driver of the shuttle, just so you know what to expect.
We were exhausted, it was COLD (literally freezing most early mornings and late nights), it was the end of our trip, we had been at Universal ALL day long, and to come out in the pitch black only to find that we had to figure out a way to get back to Jambo was...very emotionally and physically bad for us. DS was so tired and cold that he was in tears. We had only checked in moments before we headed out for the ADR, hadn't had time to look at maps, had NO idea where the path between the resorts was (and my mind's eye pictured a fenced in path through the savannah, LOL), and when we decided on the bus and waited for it, the driver was downright mean and it was very unpleasant.
And to think we had a car parked in the lot, but thought the shuttle would be easier!
My whole point is just to KNOW what you should expect. So if you use the shuttle, ask the driver when they stop the service for the evening, and maybe check out where the bus stop is before you enter Kidani for your reservation.
ENJOY Sanaa! We are looking forward to our meal at Sanaa more than almost any ADR we have. It was so tasty!