Our recent cruise was our second so we were considered part of the "Mariner Club". Our benefits seemed to be 2 "HAL Tiles" and a nice brunch in the dining room near the end of the cruise. We had free wine at the brunch~ two glasses if you were alert enough to get their attention at the right time.
We were chatting with a couple who were on their 40th HAL cruise (yes 40th) and he made the comment that the only additional benefit that he saw in what they got vs. what we got was that they had free laundry service.
Not sure what to do with the HAL tiles, suppose they can be used as coaster on the back deck or patio at home.