Do you have a reference for that?
It's not a law, it's a rule for that specific location of the park. If a museum says "no flash photography" in front of an exhibit, that's all they need to put up.
By that argument, anyone could make a fake...
That's a faulty assumption. That would be like stating that speed limit signs would not be valid if they didn't list a penal code on the sign. That's not how it works.
The second post in this thread has a link to a document that states that...
While the drone may not be able to write to an SD card at the card's fastest speed, having a faster card will benefit you when you read the data from the card. Here's a good write-up from Matt Cole of card reading and writing speeds On the...