Thank you for your email and providing us with the work schedule. I think its worth informing the owners the same to see if anybody has objections of work being carried out on Weekends, I suppose they will not in light of the fact that this would help to get the work done faster, however please let us check on this first.
We are happy with regards to the spaces you have mentioned that will be used by the Contractors and will monitor to ensure there that workers do not go wandering off to common areas, although like you said this needs to be a joint effort between us, Dorsal and Sritikorn. Please let us know when you would like to have a meeting with us