We can not alter our plans to the desires of individual people, sorry. The server will run open beta on 21st December (afternoon hours probably) because that's the soonest we can dispatch it before the actual christmas days, and we must do that because of the christmas event. Anyway, it will be free and open for everyone for an unforseeable future (until it's released) so even if you are not there on 21st, you can come play whenever you want.