Another opening . . . another show . . . another evening . . . another party . . . This one at the Four Seasons, with everyone famous but the waiters, was for lawyers David Boies and Ted Olson’s book “Redeeming the Dream: The Case for Marriage Equality.” About Proposition 8, it’s their arguing before the Supreme Court to legalize same-sex marriage.

Boies: “Took a year to write. I did my part longhand. We’d exchange drafts. We’d each upgrade, correct or remember something to sharpen the other’s first draft.”

Amid Harvey Weinstein, Bill Bratton, Ray Kelly, and another hundred drinking and clinking were Berkeley, Calif.’s married ladies Kris Perry and Sandy Stier, together 15 years, and responsible for this landmark case.

Sandy: “We were two simple people with no money. We couldn’t hire such lawyers. They were retained before we were plaintiffs. When it began, they said all would be handled through briefs. Nobody thought we’d then be ordered to be present in court.

“Now we have four kids. Twins, 19, and my two — 23 and 25 — with the man I’d married before. We have to pinch ourselves to believe this actually all happened. Never ever thought it would come about in our lifetime.”

Kris: “Although it’s thrilling, not only haven’t we earned anything as a result, but it’s cost us in terms of time and resources. People want to know about it, so we travel places talking about it. I’m an executive of a philanthropic fund. Sandy’s in technology.”

How do you like the book?

“While they were doing it we talked to them about the whole process.”

Next morning on the phone I asked Kris again, how do you like the book?

“Well, we were at the book party. We flew in for the book party. There were books at the book party.”

Yeah, so, how do you like the book?

“I don’t know. Nobody’s even given us a copy.”

Heiress apparent

Worrisome news dropping about Johnson & Johnson heiress Libet Johnson. She’s Robert Wood Johnson’s sister and great-great-granddaughter of the Mr. Johnson. Used to bizarre headlines, marrying assorted husbands, accused of co-opting a young niece’s boyfriend, buying/selling/rebuying/redecorating/reselling apartments and mansions, adopting a Cambodian child etc. Now, she’s generating talk of fragility.

Odds & ends

Chuck Scarborough emceeing Southampton Hospital benefit Aug. 2 . . . ABC-TV’s legal beagle Dan Abrams on his weight loss: “I stopped drinking sodas. They were diet drinks, but they made me crave sweets and carbs.” . . . CHARLIE Rose: “Our morning TV show is getting stronger ratings. Just takes awhile to change people’s longtime viewing habits.”

Lotsa luck to Ms. Lopez

J.LO’s switch to Maksim Chmerkovskiy after her longtime kindergarten beaut is because that ex kid was boring, just hanging around, not doing anything — but her. This “DWTS” newie is at least doing many things — besides her. But judging by their recent denials, it’s doubtful two narcissistic personalities ever truly find love, happiness and choreography together.

Pay attention

AARP editor Myrna Blyth’s launched “Boomer Superstar” contest for star quality kids born between 1946 and 1964. Judged by Emilio Estefan, they get $5,000 and — someday — a lifetime AARP magazine subscription . . . MEANWHILE their parents can read James Fragale’s autobiographical novel “The Answer to Life,” which he swears is getting great reviews on Amazon.

EXECUTIVE: “This new hypochondriac’s already used up all his sick days.”

HR person: “So what’re you going to do?”

Executive: “Wait ’til he calls in dead.”

Only in New York, kids, only in New York.