The episode where they put on High School Musical might as well be called "Hey, Did You Know Ashley Tisdale Also Plays Sharpay?" Gets bonus points for Tisdale performing Lucas Grabeel's parts in "Bop To The Top".
"Doin' Time in Suite 2330" is also not on the service, nor has it been on either network or their respective streaming service ever since guest star Chris Brown assaulted Rihanna. However, it is still available on iTunes, Amazon Prime, Google Play, etc.
Creator Backlash: While he wasn't a part of its development, when one fan asked him on Twitter how to get past a level in the official DS game, Cole Sprouse responded by telling them to smash the cartridge.
Dawson Casting: Not so noticeable in the beginning when 17-year old Brenda Song was playing 15-year old London Tipton, but by the end of The Suite Life On Deck in 2011, London was a high school senior and Brenda was 23. Ashley Tisdale played 15-year old Maddie in 2005 when she was 20, but it's unclear if Maddie aged as slowly as London or if it just took London a few tries to make it through high school. (though On Deck makes it clear.) In any case, Ashley was 23 when The Suite Life of Zack & Cody ended. It was worse for minor character Mary Margaret, who was the same age as London and Maddie, but played by Monique Coleman, who is five years older than Ashley and eight years older than Brenda. Averted completely with Zack and Cody themselves, who were literally the exact same age as their characters, starting the series off 12 and graduating at the end of the series at 17-18.
It's pretty clear that London has been held back. In On Deck, Tutweiller mentioned that London had been voted Prom Queen her last 3 senior years, confirming she had been held back. Plus the twins, who are three years younger, graduated with her. So in the final season of The Suite Life of Zack & Cody, London and Maddie are seniors and Zach and Cody are freshmen. At the start of On Deck, London is still a senior and Zack and Cody are sophomores. So London doesn't really fit this trope too much as London would be 21 while Brenda was 23.
Fake Mixed Race: London Tipton's mother is revealed to be Thai and father is revealed to be white. London is played by Brenda Song, who is both Hmong and Thai.
Fake Nationality: Foreigners are generally played by American actors. This was also once Double Subverted — they visit England, and the guest star of the week is Charles Shaughnessy, who actually is British — but by the end of the episode, the character has been revealed to be Belgian. Go figure.
Fake Russian: The episode "Das Boots" had Sasha Matryoshka, a Russian junior chess champion played by Cody Kennedy, who's of Russian ancestry, but otherwise American as apple pie.
Promoted Fangirl: Debby Ryan had a few acting credits but was otherwise just a normal teenager and huge fan of The Suite Life of Zack and Cody before becoming Bailey.
What Could Have Been: Dylan Sprouse said he and Cole wanted to have creative control of the show for a potential 4th season, as well as a pay increase and producer credit. They pitched an idea where Zack and Cody return to the Tipton while the two attend college. They would also become friends/mentors to a boy who lives with his single father in the hotel, showing him all the fun one could have at the Tipton. Once the season ended, the boy and his father would get their own show via a spin-off. Disney vetoed their pitch idea and gave their own idea which, according to Sprouse, was the same as theirs but with a few twists (and did not increase their pay and give credit). The potential show would have involved Zack going to work in Miami with Cody and would've had Selena Gomez attached. There were rumors saying that the executives liked Debby's idea more than the Sprouses' (Which led to the aforementioned Jessie), and the rest is history.