If you season your cast iron at the campfire like you do at home, it will be fairly weatherproof and more suitable for transport than with the beeswax coating. Not saying that the beeswax idea won't do, just that it shouldn't be necessary. If you need to coat the pot with something beyond what the seasoning process furnishes in order to keep them from rusting, then something is wrong.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)