The phrase "almost always filled" is correct and usable in written English.
It can be used to describe a situation or condition that frequently occurs but is not guaranteed to happen every time.
Example: "The theater is almost always filled during the holiday season, making it difficult to find tickets."
Alternatives: "usually occupied" or "frequently full".
So is the tiny Suzie Q Cafe, which has nine stools (almost always filled), no tables and a fabulous pork tenderloin sandwich.
Mr. Paster offered his advice in person, taking road trips to meet with agency executives; on the telephone; and at workshops held during the annual meetings of the Four A's, in rooms almost always filled to capacity.
Buses will take beachgoers to Flying Point and Sagg Main beaches, where the parking lots, with 200 spaces each, are almost always filled on summer weekends, leading to lines of cars waiting to park.
More recently it paid a larger, undisclosed sum for land in Dutchess County, where the housing bubble drew many young families, and where the archdiocese last year opened a new church, Blessed Kateri Tekakwitha, with seating for 1,200, almost always filled to capacity.
The stadium is more than just eye candy it offers some of the best ballpark food in the majors, it's easily accessible via public transit and it's almost always filled with roaring crowds.
The gardens are almost always filled with dogs happily walking about and tai-chi practitioners.
The shows, with a mix of original and traditional songs, run through December, almost always filling the 99-seat theater.
Requests from liberal Democrats almost always are filled, those from Republicans rarely.
Healthcare is too complex in its entirety to be simplified, so oversimplification will almost always be filled with fallacy.
Your Green and Yellow candy orders will almost always get filled automatically through cascades and other indirect clearings.
Otherwise it will always fill the gap.
