When we had our contract appointment we ran out of time. Too much to cover off as we finally got firm prices on certain upgrades, plus it was the first time that we were shown what the kitchen / laundry / bathrooms would be like. No matter how much we asked for drawings beforehand, we just couldn't get them. We were able to take home all the documents and drawings to read through and we scheduled a second contract appointment for the nearest available which was a few weeks. We emailed though most of drawings changes ahead of the second appointment so that they could get it all ready, and they called it a closed contract appointment, with any further changes to be done as a PCV.
We were lucky enough that our BC sent us all the drawings prior to our appointment. Made it so much easier!