The LAN event is located in RCH 307. The room itself is in the middle of the top floor. If you don’t know where RCH is, just check the map at uwaterloo.ca.
This should be fairly fine if you are bringing your laptop to the event, but it may be a slightly different story if you want to bring your desktop computer and a monitor.
If you have access to a car, it’s possible to pull up right beside RCH, so that you hardly have to carry it.
The easiest route is to drive into the road by DC/E3, and turn left to go towards RCH. This will get to to the car gate, but not right next to the building. To do that, take the same road by DC/E3, drive under the passage connecting the chem buildings, turn left at the egg statue and continue under the pathway by the science c&d. Then just drive up to RCH.
Alternately, you could pull up near South Campus Hall and walk from there. If you need more help you can just hit the Contact Us button to ask a club member about it.