The only resort I knew of where pool-hopping was not allowed was YC/BC's SAB. I didn't even know about AKL, although I probably wouldn't choose to hop there anyhow. It was not my favorite resort when we stayed there last year.
We just returned on August 1st from a trip and went to the BW pool and had no problem. We were styaing at OKW and were at AK, and they were having the Member Day festivities at BW, so we decided to do our thing at AK, spend some time at the BW pool ,and then go to the Member Day festivities. It was a nice day all around too!