Late 18th Century Austrian Wedding Ceremony

[ladderax]

I am writing a fanfiction story loosely based on the film/play Amadeus. Because I knew that I probably couldn't achieve the level of detailed research I wanted to in the period of time I had to write the story, I ended up setting it in an invented country (none of the countries mentioned in the story are real, but there are unmistakable parallels to real places) and I am aware that there are anachronisms and inaccuracies. However, I have done research and tried to evoke late 18th century Austria as much as possible.

I specifically wanted to know what a wedding in Vienna might be like (the characters getting married are a musician and a governess):

-What kinds of music might there be?
-I've read that there were receptions; where did they take place?
-Who was in the wedding party, and what were their roles?
-What was the ceremony like?
-Anything else I might need to know?

Any help would be much appreciated.