No Draino. Plumbers strongly dislike it. Just in case you end up needing one.
I asked the BF (ex-plumber) on suggestions for non-draining dishwasher. Well, his words on what it is aren't forum safe haha. So good luck!
And yes drain hose is supposed to be there. He said if its not draining, its normally the pump is messed as its not pumping water out anymore. That is his guess because of the description of the food chopper thing in the bottom. But it is seriously lacking information to make a call on it of course.
We just had to replace ours and we got a pretty good one for $350. So at least they aren't super crazy expensive to replace. But from what I get from the BF, most dishwashers just need to be replaced once they start messing up, because of how much fun they are to work on. Stupid things.