One thing to remember, this is the first summer they've operated the bus so it is a learning curve for everyone. Doesn't excuse their not making it clear, or stating that it runs rain or shine, they must fix that statement ASAP. But I am not surprised they are working through the kinks related to summer rain.
The AK bus stop has moved from the original location near the Safari. If you make it to the Safari you've passed the current check point. It's at Tusker House check in. Or next to it. They share the same covered area, across from the bathroom's in Africa. The actual bus loading area is not near the check in point. You will walk down the path to the Lion King theater and out a side employee entrance to a back stage area. The buses pick up in the same parking lot that the Safari vehicles are stored in
There are 2 ways in to Pandora. Main entrance is first left past Tree of Life, past Pizzafari and Tiffins/Nomad Lounge.
Other way is past Lion King Theater. This would be considered by most as "the back way" in. Sometimes, when things are really crowded, this is exit only. This has not happened very often after the 2nd day of operation. If it is exit only they have large signs posted.
If we arrive to AK through the main entrance we take the main entrance in to Pandora. When we arrive to AK via the Express Bus we take the entrance in from Africa as it's just on the other side of the Lion King theater.