When Lincoln and Albert emerged from the ocean, they were wet. But when Lincoln regained consciousness, he and Albert were dry.
When Lincoln grabbed his throwing stars, one of them landed on him. But in the next scene, Lincoln didn't have a cut on his face.
Even though the bellboy was disguised as Myrtle, Rita and her daughters didn't know that his voice didn't sound like hers.
When Rita and her daughters were talking to the disguised bellboy, Rita, who thought that he was Myrtle, asked him if she can call him Mom. But since Albert was Rita's father, Myrtle was still her stepmother.
Even though Lincoln and his sisters referred to Myrtle as Gran-Gran in the 3rd season of The Loud House TV series, Lincoln was the only one who referred to her as Gran-Gran in this movie.
In the 7th season of The Loud House TV series, Lucy turned 9 years old. The events of this movie took place before the 7th season. Because of this, it's possible that Lucy was still 8 years old in this movie. However, it's unknown if it's true or not.