Ah, I see, thank you for clarifying.
OK, so just like with Bookmarks, you can actually get full albums queued from a Smart Playlist. It just won’t be random, since “Random” selection shuffles by tracks and not by full albums.
Would be awesome if “Random” would shuffle on track level for track-based Smart Playlists while on album level for album-based Smart Playlists. That’s pretty much what the feature request I linked above is about.