As long as your periods are always at least 3-4 weeks apart even if they are sometimes longer apart, taking Norethisterone will be fine. Instead of taking it the month of your wedding though, I would take it the month before. So if you are due around the 1st of the month and getting married the 1st of June. I would start the Norethisterone around the 25th of April and stop taking it the 15th of May. Your period will then be approx 17th May- 22nd May, which means your next should start approx 15th June (when you are back from honeymoon).
I wouldn't take it for the first time around your wedding day, as it can give you prolonged PMT ie 3 weeks of water retention, bad moods spots etc and you would need to remember it 3 times a day on your wedding day and on honeymoon, whereas it is much easier to manage that the month before the wedding. It shouldn't make your periods more erratic and isn't a contraceptive, so shouldn't affect ability to conceive, even if you want a honeymoon baby.