1 Chronicles makes it clear that the same regulations applied to this event as temple worship - hence the need for Levitical singers and musicians, among whom you have just placed the women of psalm 68! And yes there were sacrifices there (
1 Chron 15:26). If that's not a worship service, I don't know what one looks like.
I didn't place the women of Psalm 68 into the occasion of David bringing up the ark! If you read what I wrote earlier I placed them in the victory at the Red Sea, agreeable to the first part of the Psalm's context. I think the Psalm is alluding to that event and to Miriam's and the women's rejoicing. Women aren't specifically mentioned as being among "all Israel" in the narrative of 1 Chronicles 13 or 15. Could they have been? Perhaps? Again, this did not take place in the stated place of public worship, but was a procession. So I'm still reluctant to call it a stated worship gathering. Got a commentator who makes the argument that it was?
So yes, I agree that the occasion of bringing up the ark was regulated (the 2nd time). But importantly, the first time David attempted to bring up the ark (1 Chronicles 13), God broke out against them for their carelessness in ordering the procession. "And David and all Israel played before God with all
their might, and with singing, and with harps, and with psalteries, and with timbrels, and with cymbals, and with trumpets." Did all Israel here include non-Levites, women...?
When David went back again the 2nd time to bring up the ark, he repented for how he had approached it at first (1 Chronicles 15:13); he appointed the proper Levitical office to their places. "And David spake to the chief of the Levites to appoint their brethren
to be the singers with instruments of musick, psalteries and harps and cymbals, sounding, by lifting up the voice with joy. 17 So the Levites appointed Heman the son of Joel; and of his brethren, Asaph the son of Berechiah; and of the sons of Merari their brethren, Ethan the son of Kushaiah; 18 and with them their brethren of the second
degree, Zechariah, Ben, and Jaaziel, and Shemiramoth, and Jehiel, and Unni, Eliab, and Benaiah, and Maaseiah, and Mattithiah, and Elipheleh, and Mikneiah, and Obed-edom, and Jeiel, the porters. 19 So the singers, Heman, Asaph, and Ethan,
were appointed to sound with cymbals of brass; 20 and Zechariah, and Aziel, and Shemiramoth, and Jehiel, and Unni, and Eliab, and Maaseiah, and Benaiah, with psalteries on Alamoth; 21 and Mattithiah, and Elipheleh, and Mikneiah, and Obed-edom, and Jeiel, and Azaziah, with harps on the Sheminith to excel. 22 And Chenaniah, chief of the Levites,
was for song: And Chenaniah, chief of the Levites,
was for song: he instructed about the song, because he
was skilful."
"So David, and the elders of Israel, and the captains over thousands, went to bring up the ark of the covenant of the Lord out of the house of Obed-edom with joy. 26 And it came to pass, when God helped the Levites that bare the ark of the covenant of the Lord, that they offered seven bullocks and seven rams. 27 And David
was clothed with a robe of fine linen, and all the Levites that bare the ark, and the singers, and Chenaniah the master of the song with the singers: David also
had upon him an ephod of linen. 28 Thus all Israel brought up the ark of the covenant of the Lord with shouting, and with sound of the cornet, and with trumpets, and with cymbals, making a noise with psalteries and harps."
"All Israel" brings up the ark of the covenant upon both occasions. Who is included in "all Israel?" Every member of Israel? Every child, every adult? Or is all Israel, especially this second time, defined by the properly appointed Levites (and David) in their stations as described?