There were a lot of colors and a basket of funky hats for people to wear at Janet's memorial, a low key space and food Brought By ALL. It also had some lead time to organize.
Yesterday's service for Paul was a mostly corporate affair. Lots of suits and black (I wore a dark purple blouse because I look good in purple). People in the office worked very, very hard to pull this together within a few days. The casket was obvious. Some food was made by one of the attorneys, the rest was catered by Whole Foods.
I suppose you'd call this different "class" rituals, or different milieus. One artistic, one business.
So there's a great deal of variation in our American culture, consider that for your own writing. How much class structure? How much variation? I don't see almost any on Lladrana, and not much in variation on Celta. The basic ceremonies would be the same. Of course, it's easier to write a culture with no variation, or a world with clashing cultures that would handle rituals differently.
The people were dressed differently, ate homemade v. catered food, looked differently, interacted differently -- the patterns of mingling and status were different. These are all things that you can use in your writing.
May your next description of a social gathering be unique.