I disagree it’s most of what is written above. So you won’t see anyone lighting their violins on fire or being lifted by a cable over the audience.
The Brandenburg Concertos feature a lot of instrumental effects. For example the Sixth omits violins and uses low strings only. The Second features a very high-piccolo- trumpet that Paul McCartney liked so much when he heard it he adopted it for Penny Lane. The Fifth is basically a harpsichord concerto in the first movement, that ends with a crazy cadenza (solo) where Bach was foreshadowing the Piano Virtuosos 150 years in the future. The second movement is basically a chamber outing between the flute, keyboard and violin where the 3 lines weave in and out as only Bach could do so seamlessly.
Every concerto has something special.
Listen to the music at least twice before the concert so that it has something special familiarity. Then when you are there are how different choirs of instruments produce the sounds .