Mariner of the Seas - Cabin 8648 - Balcony Cat 4B - 10/15/2018

This was our original cabin for the Mariner of the Seas 4 night cruise from Miami to Nassau and CoCoCay. But there was an incessant knocking coming from behind the walls in the bathroom. Guest Services moved us to cabin 1636 which is a Junior Balcony Suite. See my video https://www.youtube.com/watch?v=s1MQ7T7tRFU&feature=youtu.be . Cabin 8648 is a 199 sq ft balcony Cat 4B which has a 65 sq ft balcony. The knocking noise in that cabin's bathroom was coming from a defective pump.