"Fortunately there's an ICANN renewal grace period"
Renewal grace period isn't an ICANN thing it's a registrar thing. We're a registrar. ICANN doesn't specify what we give as a grace period at all at least in terms of anything that would cause a violation in our contract. They do ask us to specify the days that we will allow in a grace period but I've never seen any feedback at all as far as any restraints on what that time period should be.
I accidentally let my domain name expire. How do I get it back?
You may be able to get it back for 30 days after it has been deleted by the registrar. This period is called the Redemption Grace Period. Only your original registrar can perform this service. The registrar is allowed to charge you a fee to restore your name during the Redemption Grace Period.
Renewal grace period isn't an ICANN thing it's a registrar thing. We're a registrar. ICANN doesn't specify what we give as a grace period at all at least in terms of anything that would cause a violation in our contract. They do ask us to specify the days that we will allow in a grace period but I've never seen any feedback at all as far as any restraints on what that time period should be.