I also tend to leave the plants on the dry side. It gets me into trouble with spider plants so I decided not to buy them any more.
I called the plant shop to ask how they had been caring for it, and they said it's an easy plant, it flowers a lot, and they didn't do anything special to it other than fertilize about once a month. Their plants were stunning, so maybe it's all easy to them. Oh, and they also have floor to ceiling windows on half of the building...