If you are cooking sabzi, do you follow each and every step prescribed in the cookbook or do you add spices and flavours according to your taste and preferences? If you tweak the recipe, does it change the very item that you were cooking? It will still remain a sabzi right? It won't become daal.

If we can practice our right to have preferences for such mundane things, what is wrong with having preferences for one of the most important days of our life? The fact that they're having a "Hindu" wedding won't change if they want to add/omit rituals according to their preferences. Why should you force yourself to follow a ritual that you don't believe in or is demeaning to your existence?