Open Friday and Saturday from noon to 9 p.m. and Sunday from noon to 10:30 p.m. There's a parking lot but you may find it full and have to cruise a bit. No credit cards or reservations. Accessible by wheelchair.

Some of Washington's finest family outings are once-a-year affairs - beginning in earnest just about now. We refer to our rounds of the church-supper circuit, where ecumenical ethnic eating can be neatly coupled with fun for all ages.

Our September kickoff, for example, began with the fall picnic at St. Sophia Greek Orthodox Cathedral at 36th Street and Massachusetts Avenue NW. Though it's over now, we can share enough of the flavor here to point to yet another grand weekend beginning tomorrow and running through Sunday.

It, too, will be all Greek to everyone - with all comers welcome.

At St. Sophia, we first savored the smoking-good-aroma of lamb being cooked in a charcoal pit under a big tent.

Under still another tent we checked out the Souvlaki sandwich, a $2 collection of tasty little meatballs tucked into Syrian-type bread.

Along the outside of the church and under the big main tent of picnic tables, the informal gathering of all generations was growing at a rapid rate - and quite early in the evening. Indeed, for these affairs one should eat early for best results in terms of lines and seats. By 7 p.m. the dinner line was well out to the sidewalk.

Still, it did move. Besides, at these church fetes, the people doing the serving are cheerful volunteers dealing with generally good-natured crowds.

So, with my wife away for the weekend, it was especially convenient t whistle our 10-year-old son and 8-year-old daughter to a dinner-dancing-and-games evening.

My son and I requested the lamb dinner, at $4.75, which was a hefty hunk of meat, served with manestra (a kind of slippery rice) and a salad with feta cheese and olive.

The offerings also included a chicken dinner at $3.75 and my daughter's choice, the child's chicken dinner at $2.50, which was anything but skimpy and came with the same manestra and salad combination.

There was beer or wine for 75 cents, soft drinks for 30 cents or a bottle of wine for $5.75. For dessert, the children each opted for double-sized ice cream cones for 50 cents each.

By then the main tent had come alive with musicians and an ad-hoc-anybody-join-in line of dancers snaking through the dinner tables, arm in arm, young and old, nimble and clumsy.

Our total bill for tis gala of gluttony was $14.35.

So this one is an affair to remember next time around. But the other Greek favorite of ours opens tomorrow and runs through Sunday at Sts. Constantine and Helen Greek Orthodox Church at 4115 16th Street NW. Every year we treat ourselves to some of the whole lambs roasted on spits and to countless other side dishes: moussakas, spinach pies, kebabs, pastries, you name it. Here too, there's dancing inside and all sorts of knick-knacks for sale.

It's tricky, of course, to find out when and where the best church socials are. But neighborhood bulletin boards are one source of information. And a telephone call here and there also can turn up some great goings-on.

At any rate, you're likely to be pleasantly surprised at the reception outsiders received, as well as the cuisine and the multigenerational good times.