NILES — Trumbull New Theatre’s production of “Disaster!” should come with a warning for the lactose intolerant.

The show created by Seth Rudetsky and Drew Geraci couldn’t be cheesier, and we’re not talking a fine French fromage. We’re talking Velveeta or plastic-wrapped American singles. Then again, Velveeta makes for a tasty grilled cheese sandwich, and “Disaster!” is undeniably fun, a low-brow comedy that’s highly entertaining, especially for those who lived through the ’70s.

The jukebox musical is set in 1979 at the opening of New York City’s first floating casino and discotheque, but the eclectic group of attendees must deal with a series of natural disasters, everything from earthquakes to tidal waves to fire to rats.

With the exception of “Jaws,” none of the movies it spoofs are going to show up on a list of the decade’s best films. And the majority of the songs certainly aren’t critical favorites. Rudetsky and Geraci take perverse pleasure in finding ways to weave the most kitschy hits of the ’70s into the story. I had to explain to my daughter, “Yes, a nun really had a Top 40 hit by setting the Lord’s Prayer to music,” and “That song a character sang about her brother, Ben, originally was sung by Michael Jackson about a rat.”

The musical is filled with the kinds of characters that populated those disaster films. I don’t think he ever twirled his mustache like a cartoon villain, but Harmon Andrews is the embodiment of the greedy impresario as Tony Delvecchio, whose casino is a floating death trap because he ignored safety regulations and bribed inspectors.

Ron Aulet was just as good as Ted Scheider, the geologist who predicts nearly every mishap that befalls the ill-fated casino and usually comes up with a solution.

Caitlin Overton had several strong vocal numbers, particularly the ’70s anthem “I Will Survive,” as Jackie Noelle, a singer on the ship and a single mother to twins, Ben and Lisa. One of the funniest gags in the show is the creators have the twins played by the same actor. Trudi Herrholtz played the parts opening night (she alternates in the roles with James Matig) and was a standout despite being surrounded by more experienced cast members. She earned some of the night’s biggest laughs and displayed impressive pipes on “When Will I Be Loved?”

Emma Wason, who also serves as music director, was a comedic highlight as Sister Mary, a nun who starts out by condemning those entering the vessel of sin but who ends up revealing she has a weakness for slot machines as well as God by singing “Torn Between Two Lovers.”

Real-life spouses David and Lois Schneider shined as Maury and Shirley, a variation on the longtime married couple played by Jack Albertson and Shelley Winters in “The Poseidon Adventure.” Their banter displayed impeccable timing, and the affection they brought to the song “Still the One” perfectly captured the characters.

“Disaster!” has a cast of about 25 actors, and director Al McKinnon (who also plays a supporting role) does a fine job juggling all the moving parts in a fast-paced show and giving nearly everyone in the ensemble their moment in the spotlight.

Tom Hitmar’s set design handles all the demands of the production in the intimate confines of TNT’s stage, and the low-tech methods of conveying major special effects like the ship capsizing and flooding only added to the silliness of the show.

Opening night certainly wasn’t perfect. A first act scene was underlit (it was hard to tell whether a lighting cue was missed or the actors forgot their blocking), a singer had to quickly restart her song (either a sound cue for the prerecorded instrumental track was missed or a she started too early) and some of the songs exceeded the range of the performers’ voices.

But the energy and enthusiasm of the ensemble more than made up for some rough edges. For audience members of a certain age, the show is a nostalgic treat. And for young theatergoers used to being told by their elders how terrible today’s music is, the songlist for “Disaster!” should give them plenty of ammunition for their rebuttals.