I went through my genio completely solo. I went through my recent MMA with limited assistance both in the hospital and when at home. I had some friends the first few days here and there. Regardless of what anyone says, having some around the clock help for the first few days is def something you should shoot for at a minimum. Longitudinal support, both for activities of daily living as well as the more intangible things like emotional support, are important.
Can you get through it alone, def. Is is optimal, def not. Depending on what you're having done and how you are doing post-op, I would go so far as to even say it is unsafe to not have some company until you are through the very acute recovery stage (first couple nights maybe?).
