How late can you check in?

Call they will let you in a couple hours early normally

How late can I check in??

You can check in any time you want to. Personally I think it's a waste of $$ to get a hotel room like midnight or later cause you're still paying as much as you would to have it for 24 hrs except you're only getting it for 10-12 hrs. But yeah Kings Row you can check in anytime they do by the hour too, I'm pretty sure