Cabin Question - Volendam

[oe1]

We have an AA cabin (Navigation Deck) on the Volendam. In the deck plan there is a solid black traingle, which is described in the legend as "2 lower beds or converts to 1 queen-size". However, this is the description for all cabins in this category. Why would this one get the "triangle"? There are a few others that have it as well.

Any general comments or experience with this category cabin would be appreciated as well.

[RuthC]

The legend for that deck indicates there are some cabins with two lower beds that do not convert to queen. There are also triples and quads on that deck.
I suspect that the deck plans are just identifying how every single cabin is set up.