No sentimental swan songs for departing Soviet Ambassador Anatoliy Dobrynin -- even though he spent about a third of his life in Washington.

Pleading lack of time, Dobrynin has offers of farewell parties from American friends and fellow diplomats, including his successor as dean of the diplomatic corps, Swedish Ambassador Wilhelm Wachtmeister.

"We wanted to give the Dobrynins a dinner, but with only five days to pack, they have no time. So we very well understand," Ulla Wachtmeister said. Dobrynin, who is assuming a top-level foreign affairs post in the Communist Party's Central Committee after 24 years as Soviet ambassador to Washington, returned from a trip to Moscow last Friday and, according to an embassy official, is scheduled to go back this Friday.

Dobrynin's only official social farewell will be the party he and Irina Dobrynin give tomorrow night at the embassy. A thousand guests are expected, chiefs of diplomatic missions arriving first for a ceremony in which Dobrynin will transfer his deanship to Wachtmeister.

Wachtmeister, in turn, will give Dobrynin a farewell plaque of the type Dobrynin has been handing out for years to homeward-bound ambassadors.

Quote of the day, from next week's issue of TV Guide: "The press think I ought to give them everything they want. But the man who signs my paychecks is Ronald Reagan." -- White House spokesman Larry Speakes.

Other quote of the day, from the same article: "Ronald Reagan doesn't pay him! The taxpayers pay him." -- ABC correspondent Sam Donaldson.

Reports continue to circulate that Canada's Prime Minister Brian Mulroney is "livid" that a slap upstaged his first official visit to Washington. Not so definitive is what Mulroney intends to do about it. Sources in Canada say Ambassador Allan Gotlieb is credited with doing a good job as envoy here, but they are evasive about his future.

Gotlieb's wife Sondra, who slapped social secretary Connie Connor when told a prized guest wouldn't be coming to the embassy's dinner for Mulroney, got her comeuppance soon after in a message from Mulroney. Said a senior Mulroney aide: "You can be sure she has been told" to mind her manners.

Mulroney learned of the slapping incident even before dinner was over. After dinner, he made a point of seeking out Connor to compliment her on the evening's arrangements.

The grand opening of Western Development Corp.'s $200 million Washington Harbour in Georgetown is still a few months off, but to organizers eager to find a spectacular setting for their Homemaker Health Aide Service (HHAS) fundraiser, the fact that the building's interior is unfinished was hardly a deterrent.

So it was that Western Development agreed to provide not only the site -- the building's sixth floor, with views up and down the Potomac -- but also any potted palms needed to camouflage unsightly construction. The result will be a $100-a-person party Thursday night called Potomac Fling.

Just as the Potomac inspired the theme, so did the river's West Virginia source inspire the choice of Sen. Jay Rockefeller and his wife Sharon as the event's honorary chairmen. However, in keeping with Washington ways, the Rockefellers don't plan to attend.

A Senate aide said yesterday that the Rockefellers "were doubtful" when they agreed to be the honorary chairmen. "They had accepted another engagement the Radio and Television Correspondents' Dinner ." Another Rockefeller aide reportedly put it this way to an HHAS committee member: "The Rockefellers felt that using their name would be fulfilling their obligation."

bat16 "There is nothing pretentious about Senator and Mrs. Claiborne Pell," writes Washington's own Susan Mary Alsop in the May issue of Architectural Digest, which is featuring the Pells' 187-year-old Georgetown house. "They are simply rather grand in the best American tradition."

The newly named advisory committee of the year-old Nancy Reagan Drug Abuse Fund will be chaired by Richard Helms, former Central Intelligence Agency director and former ambassador to Iran.

Also named to the committee are Joseph L. Allbritton, chairman and chief executive officer of Riggs National Corp.; John G. Kester, partner in the law firm of Williams & Connolly; Nancy Reynolds, president of the lobbying and consulting firm of Wexler, Reynolds, Harrison & Schule; and George F. Will, syndicated columnist and television political analyst.

The fund was established in Mrs. Reagan's name by the Community Foundation of Greater Washington. The advisory committee will determine the criteria for grant-making and guide the foundation in building the fund's assets, according to spokeswoman Haida Sale.