The lounge was reserved. Both Mark and the team on-site were communicative and shared the exact details of how everything is going to happen.
The venue was empty of residents, they put up the reserved sign. It's perfectly out of the way for the residents, so there's no random by-passers or anyone at all. It is spacious enough for 30 people, and has microwave + fridge + room for people to sit at. The pool is also available!
The only thing is you'll have to find where to park downtown, as they don't really have that many visitor spots.
Overall, I was very happy with the quality of the venue and would definitely book it again in case I need plenty of space for a large party.