Money Changers Tabannan/Tanah Lot

We are staying out at the Pan Pacific Nirwana and have a driver organised for our holiday, what i was wondering is if we should get the driver to stop some where to change some money on the way out to Tabanan or is there some where close to that hotel that we could change our money? we are taking enough rupiah to pay the driver for the pick up and for something to eat but we are getting massages in Canggu that afternoon and will need some more cash. what would you do?