With visitor numbers nosediving, Japan's national tourism industry has gone back to the drawing board to mull ways to convince fidgety would-be visitors that the country is safe after the March 11 disasters.

But one Hong Kong travel company has already figured out its own plan: for a limited time only in these aftershock-prone times, the company's offering a full refund if an earthquake measuring 6.0-magnitude or higher occurs during the vacation.

EGL...