1. In order for letters to be passed between worlds, the gods of both worlds would need to cooperate--so they'd have to get Okota to agree to send them. I apologize for having the kids ask for that and making it seem like a potential condition for leaving the totem; it's not going to be something characters need to arrange in order to be able to keep the totem. If they can get Okota to send/receive letters there's no cost to doing so, and I will say that at present (at least given the general direction of the votes re: what to do with Okota so far) I don't expect communications to be entirely closed off.

2. Noted, thank you!