Re: My only question
Do South Korean 220V wall sockets have the same form factor as American 110V sockets?
According to the IEC’s world plug page, no — their wall sockets are for plugs of types C (“Europlug”) and F (“Schuko”). Note that South Korea is listed as running 220 V at 60 Hz.
North Korea, however, is given as “220V / 110V 50Hz / 60Hz A / C / F”, so apparently they have some proportion of ungrounded/unearthed sockets for type A plugs of North American (NEMA 1-15) or Japanese (JIS C 8303, Class II) form.