Hey mate, not quite the right command for what you want.
/Re off = automatic deny all request.
/Re on = able to receive requests
/Re auto = auto accept request.
Now for what you want to do with your alt I suggest you adding a password also, an example would be to type this on all the characters you want in the same party -
/re auto 444
Then all they have to do is request party and they will be auto accepted, but anyone without that password set will not.!
Happy playing!
Regards,
Enk