What saves you in this case is that if you imagine hitting a wave that has the water up at a 45° angle relative to you, you're passing through less water at first, which slows you down as you impact the rest.

However, the world record for high dive is 192' (58.5m),a nd people have been recorded surviving from falling off the Golden Gate Bridge, at 220' (67m), so there's some margin for error.

Choppier water is also better than calmer, because if you're presenting a smaller surface area, and you hit a wave you're basically shrinking the vector of your impact in to the water by a factor of the slope of the wave...

(question inspired by Vincent Price's character somehow surviving falling off of a tall building because he hit the water)

With the US trade embargo lifted, in 1994, it's possible that this was where these movies started filtering in. There doesn't seem to have been an official Vietnamese theatrical release of the remasters in 1997 either, but...

One particularly interesting option is a tongue-operated controller, which involves a magnetic pickup and metal stud piercing.

*dot matrix paper descends*

When you search for it now, the plagiarism machine thinks you want to know how/if George Lucas based the movies on the Vietnam War, or if Ewoks are Viet Cong.

A Vietnamese classmate in college seemed to think the movies were first available sometime in the 90s (based on his age) but wasn't sure when exactly, and I've never been able to find a concrete date, or if it was in theaters or on television.