- Author's Saving Throw:
- Some viewers felt that the franchise's statement that a "zing" (falling in love) only occurs once in a lifetime could be interpreted as a limiting or even harmful message, with the widowed Dracula being unable to move on from Martha after her death. While Dracula's love for his late wife is still regarded as important, this film revolves around him learning to fall in love again, and he finally achieves closure from Martha's death.
- The first two films had Wanda apparently oblivious of Wayne's stress at having to look after their numerous children. This time around, it's shown that looking after countless werewolf cubs is wearing her out as well.
- Quasimodo and Bela, the main antagonists of the first and second film, respectively, were often criticized for being unmemorable, one-note obstacles, with many viewers feeling that the films would change very little without them. In this film, Abraham and especially Ericka Van Helsing are given significantly more screen-time and development, with more distinct personalities and crucial roles in the plot.
- Best Known for the Fanservice: Why yes, there are things that happen in this movie other than the sight of Mavis in a skintight one-piece bathing suit, but you wouldn't know it from how the internet's responded.
- Broken Base: The idea of Ericka being Dracula's second zing. Some fans feel that this contradicts and cheapens the concept, since the past movies presented it as a once-in-a-lifetime thing, while others felt that it matures and improves it by showing that true love isn't limited to only one chance.
- Critical Dissonance: Despite being critically better than previous entries, audience scores for the film are also the franchise's lowest.
- Ensemble Dark Horse:
- There is a female Kitsune that pops up in the movie now and again who has gained some attention from fans for her appealing design and being a more unorthodox pick for a monster in a film filled mostly well-known theatrical monsters.
- Despite the Kraken's very minimal screentime, fans liked him due to his friendly and charismatic personality alongside his great singing voice.
- Epileptic Trees: The fan theory that Ericka is Martha's reincarnation has gained some ground.
- Fanfic Fuel: The entire "zing" mechanic hinged on the fact that it was one per customer per lifetime, and an enormous deal in the monster world. This movie throws all of that to the wind, and there's nothing holding characters back from zinging as many times as they want with whoever they want. So have at, shippers.
- He Really Can Act: Or rather, He Really Can Sing. Joe Jonas of all musicians provides a stunning performance as the Kraken.
- Hilarious in Hindsight:
- Ties in a bit with Irony: Johnny being the one to defeat Abraham Van Helsing. In the original concept for this show, Johnny was supposed to be a descendant of the Van Helsings. In a way, this concept of a Van Helsing marrying into Dracula's family was finally realized with Dracula.
- This wouldn't be the last Sony Pictures Animation film where Kathryn Hahn voices a villain that serves as an aide to the Big Bad. Her character eventually turns face here, though.
- It's the Same, Now It Sucks!: It sticks to mostly the same formula as its two predecessors, though whether or not this does it favors seems to be a point of contention.
- Also applies In-Universe: Drac, at least initially, thinks the idea of a cruise ship is inherently pointless, telling Mavis (and, later on, Murray and Frank) that it's just "...a hotel on the water!"
- Memetic Mutation: In early 2020, a scene of Dracula getting dressed and dancing saw popularity on Twitter, with different songs placed over the original soundtrack of "24K Magic".
- Moral Event Horizon: Abraham Van Helsing crosses this when he continues attacking Dracula, knowing full well Ericka (i.e. his own great-granddaughter) is in his line of fire. He even jokes that now the Van Helsing family tradition ends with him.
- Narm Charm: The fact that the climax can be summed up as a DJ-battle where the day is saved by everyone doing the macarena is so stupid, yet it's so hilarious that most people don't mind. What cements it is the dopey face Tinkles makes when he does it.
- Surprisingly Improved Sequel: To the surprise of many, the film currently has a 60% rating on Rotten Tomatoes, which is the highest in the franchise compared to the first one's 45% and the second one's 55%. The fact that this is the first one in the series to have Tartakovsky involved with the script possibly helps matters.
- Trailer Joke Decay: "Say hi, Bob." "HI BOB!" Worse still, it actually occurs twice in the movie without any variation whatsoever.
YMMV / Hotel Transylvania 3: Summer Vacation