It takes some common sense planning. The goal is to LAND at or near MLW, NOT achieve MLW at some remote location then transit to the runway. Given that the difference between MZFW and MLW can be not that much, poor planning can leave you in a low fuel state.
I did hear a lot of folk-lore about jettison in the sim- thing like "Don't descend in a hold while dumping- you'll catch up with the fuel and set it on fire", and "Don't dump if there are CBs around- a lightning strike will blow you up".
Sounded like BS and certainly wasn't backed up by any litterature, but i actually got tp train a KC 135 pilot, and they obvioulsy know a thing or two about fuel. He confirmed no such concerns were valid.