Everyone always has valuable advice for the bride and groom, why not record them on keepsake letterpress cards? Pass them out to guests at a shower or even at the wedding itself to fill with sentiments that are sure to be treasured.
This includes respect! When can't show even an ounce of respect, you don't have the right to complain about how you are treated. Just because you have a ring on your finger (for now anyway) does NOT entitle you to a damn thing.