Not at the moment just because we don't have the space as the museum is setup into various sections (see layout) to act as an educational resource and as a museum. We have primary and secondary schools visit the museum for field trips so whilst there are a ton of machines which play games, our focus is as a museum and as an educational resource; we are not an arcade.
If we moved things around to accomodate LAN parties then we may lose the educational value which is one of our primary focuses.
Whilst we could move things around to create special LAN party events, this does require quite a lot of time and resources to do which we don't have at the moment.
However if we are able to expand in future we may create a dedicated LAN parties room.