I'm going to probably have to do this if I want to go to my cousin's wedding in August. Not looking forward to it!

I'm getting conflicting information though. I have heard from some people that the Japanese govt. will send you to their facility and I have also heard that you have to book yourself a hotel room to quarantine in. I've also heard 14 day quarantine, 10 day quarantine, 7 day, etc etc... What the hell is going on with Japan??? Do they just make shit up when you get there??