Nostalrius Begins - Quality wow vanilla realm (1.12)

I am LANing with my boys and they wana play but cant make accounts because of the account creation limit is there anything i can do about this?

Nost policy is three accounts registered per IP. Have your boys register their account from their home assuming they all live in different houses. If you all live in the same location (Apartment, flat, etc.), you'll have to try registering via different mobile devices, like smartphones or tablets, or you can try registering from different places like work or a public place like a library.