Wedding photographer cancels sister-of-the-bride from photos

Point of note, don't be rude in general, but most especially to the person who is taking your photo. 

Being a service provider in the wedding industry has its pros and cons. 

On the one hand, it means that you are likely to get work throughout the year as people are always getting married. 

But on the other hand, it can be a cut-throat industry, not to mention there is no guarantee how you are going to be treated.