30 thousand pictures ?? how can you even press the shutter that much ?
There are 43,200 seconds in a 12 hour period, so that's nearly 1 pic per second !!
Motor drive: Press shutter once, get N pictures per second (where N varies from 2-3 on old gear, to 10+ on new stuff*). Obviously in this digital age, there's no actual motor driving the non-existent film... but if it's an SLR (as I assume it is) then it's still got to move the mirror that quickly, so it'll still make that satisfying paparazzi "clickety click" noise. Well... unless the mirror is locked up, in which case it won't of course
* I'm guessing here... my camera, a relatively ancient but still brilliant Nikon D90, does about 4fps in "drive" mode. It's pretty easy to spam a memory card with lots of very similar looking pictures if you forget to turn it off...