Hi Claire, as Liz says, it's fine to drive after bandfill. When I had my band filled for 2nd time, it wasn't underx-ray or anything. Basically a nurse weighed me, got me to lie on bed thing, put needle into port, withdrew what was in the band and put new saline in with a bit extra on top of it. Then I sat in waiting room drinking water and tea to ensure they went down ok. And that was that x