I wrote out my thoughts on my answers to the two questions, and they wound up being long and a little tangential to the bulk of your comment, so I figured I'd throw in a thanks for the thought-provoking reply. I am enjoying this conversation.
What is real?
Consciousness self-asserts: (1a) 'I think, therefore I am' (or else, 'thought is occurring, so thought must exist'). If you accept the reasoning there, you can also grapple in (1b) 'I see blue, therefore blue exists', etc.
In that sense, our consciousness is a rare example of something that definitively exists. A statement like 'there is a rock in space called Earth' would be false if we lived in a computer simulation. The correct statement becomes 'there are a bunch of numbers representing a rock in space called Earth, in this computer'. Consciousness doesn't answer to the abstraction in the same way. 'I see a rock in space that I think of as Earth' is true regardless of whether you're inside of the simulation.
We can also assert that reality exists, as far as (2) 'there is a thing that my experience interacts with which I do not consciously control and which exhibits complex behavior', and also, (3) 'I exist (per 1a), therefore I am somewhere. I can perform computations, therefore the place I am in must allow for computations to occur. I have experience (per 1b) therefore there I am somewhere in which experience can exist. Reality exists (per 2) therefore there must be something sophisticated enough to produce it.'
But that's strictly an informational definition, again equally true whether or not you're in your own dream- it only addresses the complexity of the mind producing the dream.
So to conclude: information is quintessentially real. Our consciousness and reality are real at least to the extents that they are information, which are 'very much so' and 'a lot, maybe more', respectively. Physical reality as we know it might be real, Occam's Razor says 'probably', Simulation Hypothesis says 'probably not'. Anyone's game. I think that a physical reality of some form must exist in order to perform computations and produce information, but I'm open to a rebuttal.
And then why the hell am I conscious? This seems to be the crux of the matter. It is my opinion that the answer is of the form 'consciousness solves problem X efficiently along dimensions Y and Z' where X is some fundamental component of intelligence, and Y and Z are environmental constraints. I think it's unlikely that the answer is related to the fundamental makeup of the universe. Evolution follows the path of least resistance, and entangling our minds with some innate property of quanta, from the scale of proteins seems more challenging than other conceivable non-conscious solutions to general intelligence.