I did the HAL 14-day out of San Diego on the Zandaam and loved every bit of it, but that was four years ago and I know some things have changed. HAL usually provides quite a list of activities on sea days. We did the night passage of the volcano and it was fantastic, though I am always amazed at how many idiots think they can take a flash photo of the lava! There was also a shore excursion that went to the top of the volcano and included a walk through an old lava tunnel, which was equally interesting.