By John Lyle Belden

We tend to recall the past as somehow an easier time, but each era has its own anxieties. Many of us remember the 1990s, still it’s easy to forget how the feeling of imminent change at the end of a millennium carried a lot of uncertainty, even before the Y2K panic.

In the holiday comedy, “Greetings!” by Tom Dudzick, presented by Main Street Players of Westfield, they don’t have today’s terms like “autism spectrum” to describe the personal struggles of Mickey Gorski. The words “mentally handicapped” are briefly mentioned, then not said again as it is better to think of the young man as just a happy member of the family whom his parents cherish, accepting any little word he adds to his limited vocabulary as a divine gift.

Mickey (Dylan Acquaviva), with doting mom Emily (Barb Weaver) and sullen but loving dad Phil (James LaMonte), are preparing their Pittsburgh home for a Christmas Eve visit by big brother Andy (Nathaniel Taff), flying in from New York with his girlfriend Randi (Megan Fridenmaker). A couple of things seem to feel off from the start, including frequent issues with the house’s electrical wiring and Emily’s insistence that she recently heard Mickey say – for the first time ever – the word “greetings,” a feat she seems unable to make him repeat.

The stress of caring for this son has become routine, however, the arrival of Andy gives former minor-league pitcher Phil emotional curveballs he can barely handle. The good news is that Andy and Randi are engaged; the distressing part is that she is an atheist Jew and he has reconsidered aspects of the family’s Catholic faith.

As the inevitable argument ensues, Mickey calmly stands up straight and declares, “Greetings!”

And then, he says even more.

Directed by Jeremy Tuterow, this charming and funny family drama gives a meaning-of-Christmas lesson that blends aspects of “All in the Family” and “The Twilight Zone” with how the Shepherds at the Nativity must have felt.

LaMonte gives us in Phil a solid sitcom-esque Dad who lives with unresolved issues and regrets, as well as resistance to anything more that he feels he can’t understand. Weaver’s Emily greets it all with attempts at understanding and unconditional love, though she can be overwhelmed. Taff plays Andy as caught between his wanting to be there for the brother he loves and wanting to run from what he sees as inevitable parental disapproval. Fridenmaker gives Randi a demeanor in which you can almost see her psychological armor, already forged by friction with observant Jewish parents before being brought here to deal with potential new family. She, like the others, will find her own test of faith – or lack thereof.

Acquaviva is simply outstanding as Mickey. He emulates the tics and eccentricities of his autistic character with respect for the condition and smoothly transitions to other aspects of the role with precision delivery that makes its whole fantastic nature work within the world of the play. A high school freshman with already a few other notable roles on his CV, he has us looking forward to where his talents will take him next.

One weekend of performances remain, Thursday through Sunday, Dec. 12-15, before “Greetings!” becomes goodbye. Find it at Basile Westfield Playhouse, 220 N. Union St.; find tickets at westfieldplayhouse.org.