How late can I check in or u don't need to

You just go to your site after hours. 10 pm is quiet time, and check in the next morning.

Your name will be on a board if you check in late. You must show up by the next day or your reservation will be cancelled.

Usually, late isn't late as long as you're there before the morning after your check in day, sometimes the host will stop by if they see you in the morning, if they don't tho, you need to check in before you start your day. The hosts are pretty awesome