Make sure that if you purchase the camera at your destination that you double-check the expiration date printed on its package; a lot of those disposible cameras sold to tourists can be near the end of their effective lifespans (and thus produce lower-quality photos due to the chemicals in the film having aged).

You shouldn't have any problems having the camera hand-inspected by the TSA, although I've heard anecdotal reports of screeners who apparently are unaware that you can request hand-inspection of things like film and cameras. A supervisor should be able to set them straight (mind you, I said, "should.") Even the carry-on x-ray scanner can, after several exposures, begin clouding undeveloped film.