Plot hole: After running from the pirates, the two castaways almost stumble off a cliff. Unless they were running backwards, I'm sure they would have seen the cliff coming for a while, because when the camera zooms out you can see clear terrain for at least 20 metres until the edge of the cliff.
Plot hole: The morning after Frank and Angelica sleep together the hotel manager comes to her cabin to get her for the search. He says the helicopter leaves in 20 minutes. She wakes up Frank and tells him they have to go. The next time we see them they are eating breakfast. They only have 20 minutes but that is enough time for him to go to his cabin, shower, do his hair and change, while she does the same thing. Then there is still time to go to the restaurant, order food and get it. That is some long 20 minutes.
Answer: Motu Nui is a real life island, the name means "large island" in Maori. Most likely that is the source of Lego's inspiration for the name. While it is certainly possible that whoever came up with Mata Nui first heard the name Motu Nui in this movie, it is unlikely. Motu Nui is a fairly well known island and also shares its name with a settlement in New Zealand. A fictionalized island called Motu Nui is also the home of Disney princess Moana, which obviously came out after Bionicle but speaks to how well known the name is.
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