I'm working on finding budget before I can confirm with you and I can only get the answer one month before the event.
>
> FYI: I thought of booking for min 1.5 days, maximum time 2 days, as
> last time we finished the marathon in two days.
I think 2 day sounds ideal
>
> For the room format, I like the roundtable (was wondering to add extra
> seats next to the roundtable for people joining), however it's only
> around 10 persons per table, which won't be enough for us all if
> everyone attends.
The same old question, will it possible if we adding chairs if we need it?