Alan Rickman's last film. He died four months before the film's release. The film is dedicated to his memory. His final non-voice acting role was in Eye in the Sky (2015), which was released before he died.
The character of Time does not appear in either of Lewis Carroll's two Alice books, but is mentioned in Alice's Adventures in Wonderland, Chapter 7. The Mad Hatter tells Alice that Time was a guest at their table, quarreled with the other partiers, and then cursed the tea party so that "it's always tea-time, and we've no time to wash the things between whiles."
The Red Queen's Castle Guards are creatures made of composite vegetables, modeled on the works of artist Guiseppe Arcimboldo (1527-1595). The Italian painter best known for creating imaginative portrait heads made entirely of objects such as fruits, vegetables, flowers, fish, and books.
The ship's name "Wonder" is the name of the second out of four ships built for the Disney Cruise Line. The "Magic" being the first, The "Dream" third and the fourth being the "Fantasy". Disney Magic's maiden voyage was on July 30, 1998. Disney Wonder's maiden voyage was on August 1999. Disney's Dream and Disney Fantasy entered service in January 2011 and March 2012, respectively.
Alice's father watch brand is Carrol's (visible as she prepares to leave the Wonder), an obvious reference to Lewis Carroll, author of Alice In The Wonderland and Alice Through The Looking Glass books.
Although the movie is not related to the video game _"Alice" (2000)_ by American McGee (itself a horror-themed "sequel" to the book Alice's Adventures in Wonderland) in any formal fashion, it does bear a number of striking similarities: both feature Alice in an insane asylum (albeit in completely different circumstances), Time's castle is reminiscent of the level "Crazed Clockwork", while the venous, red, organic look of the Red Queen's castle is similar to the level "Ascension", which also depicts the Red Queen's castle. None of these aesthetics or plot devices feature in the books.