People are meeting in droves this weekend. Also in antiques shows, flea markets and arts and crafts festivals. Here's where everyone is selling and celebrating:

The annual garden party at the SWEDISH EMBASSY is Saturday 11 to 4 with international booths filled with arts and foods as well as collectibles. Admission, $4, goes to the Salvation Army: the fair's at 4400 Van Ness Street NW.

It's Maret School's fete this Saturday 11 to 4, with a French cafe, dancing and international foods offered at 3000 Cathedral Avenue NW. Admission is free.

Lafayette School has its SPRING FAIR Saturday 11 to 3. Fair fare includes Italian sausages, baklava and Korean fire beef, arts, crafts, games and rformances of numbers from "The Wiz" by Children's Urban Arts Ensemble. Admission is free at Northhampton and Broad Branch Roads NW.

The seventh annual ITALIAN SPRING FESTIVAL is Sunday 11 to 6 on the grounds of the Villa Rosa Nursing Home. Besides the calzonia, pasta fritta and pizza, there's seasoned music as well throughout the day. It's at 3800 Lottsford Vista Road in Mitchellville; admission is free. Call 459-4700.

AMERICAN CLASSIC ANTIQUES SHOW is at the D.C. Armory Friday, Saturday and Sunday; the 150 dealers are talking strictly Americana: furniture, quilts, vintage clothing, woodenware and much more. Friday and Saturday noon to 9:30, Sunday noon to 6. Admission for all three days is $3.50.

The FOUR SEASONS SIDEWALK BAZAAR, sponsored by the Christ United Methodist Church is at Fourth and I streets SW this Saturday 10 to 4; selling arts, crafts, food and elephants large and small. Admission is free.

The area's NEWEST FLEA MARKET is Saturday and Sunday 10 to 5 at 1603 Benning Road NE. Sponsored by Studio Seven, it continues through September with plants, produce, furniture and more. Free admission.

Possibly the oldest is the GEORGETOWN FLEA MARKET, at Wisconsin and S streets NW. It's Sunday 9 to 6, and admission is free.

ROSECROFT RACEWAY has its usual this Sunday 10 to 5: that's Beltway exit 4A and there are collectibles and antiques offered.

An ELEGANT ELEPHANT SALE is at the Robert E. Lee boyhood home, 708 Oronoco street in Old Town Alexandria Saturday 10 to 4. Books, antiques, toys, china. . .all in free.

Lotsa books up for grabs at the WHEATON PUBLIC LIBRARY on Georgia Avenue Saturday 9 to 2. Besides 50,000 books there are magazines and records on the cheap. Call 949-4773.

Speaking of festivals and fairs. . .

The INTERNATIONAL FOLK FESTIVAL at Benjamin Stoddert Middle School starts with a parade Saturday at 11, which proceeds to the festival site at St. Thomas Drive in St. Charles area of Waldorf, Maryland. Noon to 7 there's dancing, food and crafts from all over the world. Admission is free: take Maryland Route 5 south to St. Chrales Parkway, then follow a mile to St. Thomas Drive to the school.