Was that "rule" posted anywhere that you could easily see? If not, i'd fight it. And no, not just because it was bikini pics that you really want, but just because i hate Wal-Mart and that sounds very fishy. Plus i've been to other places that develop film and most say its their own rule to NOT look at other people's pictures as a code of privacy.

Either way, you'll still have the negatives to make prints somewhere else where they arent strict on what they consider "porno". This is why most have digital cameras though...you can take pics of whatever the hell you want.