I find that many people make photography the event rather than just enjoy the event.

At my brother's wedding, there must have been 15 people taking pictures at the cake cutting. Why? I doubt my brother and his wife saw half of them. I personaly was just enjoying the  time with relatives.

The website below points this out about fireworks photos

Whenever you start to take pictures, don't let it get in the way of the event itself. Unless, that is, the only reason you are there is to take photos. 

The Best Way toTake Fireworks Photos
Also do not spend the entire show looking at your preview screen

You will miss the show. Once you see your exposure is ok concentrate on taking more photos. Either that or just enjoy the show yourself.