My experience on the Ryndam is very similar to that of Trackypup.
As I did a land tour of Denali pre-cruise, I met many die-hard HAL fans and they agreed something was def amiss on my cruise - I have always said this, the crew were VERY tired.
Of all the irritants, I think we literally could not leave our cabin - the lock/door did not work; spoke to front desk - their response was just go out and leave your cabin door open. Don't laugh - they had to replace the door.
MDR was pretty poor, the only eating place I would recommend was the PG.
I agree with Trackypup, once for me was enough. I loved Glacier Bay and Denali but HAL not again simply because there are, for me, better alternatives and not more expensive either.