The inauguration is going to be quite entertaining, just to see how bad his speech is.
But then beyond that, this is where it all gets real for Trump. The novelty of him winning will have worn off, he won't be able to wallow in the glory of victory any more. The day to day reality will kick in, and it will all be down to him. He will realise that this is a complicated, intense, frustrating and often tedious job. When things go wrong, or don't progress the way he planned, he won't be able to blame other people or divert attention by talking about Hillary. He might try to blame the media, but that will wear thin pretty soon for the majority of the public, who don't want to see a President whingeing and making excuses all the time, they just want him to get on with the job. He won't seem like a breath of fresh air shaking up the establishment, he will come across as petulant, complaining and defensive, probably shutting himself off from the media most of the time. I expect Mike Pence will do most of the work and become the public face of the administration, but while he's competent he's hardly likeable.
Even Obama, despite all the euphoria after his victory, came in for some strong criticism from quite early on, and despite his abilities and all the competent people in his administration, he struggled with the job at times. So how is this imbecile, with the mostly incompetent people he's surrounding with, going to cope with it? We can only hope that he doesn't do too much damage in the next four years.
