@Skyhu, I know you're upset because this thread hasn't delivered what you wanted to hear. You do, however, need to adjust your expectations otherwise you are going to spoil for yourself what should be a happy and joyous event.
If you do that - and I hope you will make the alternative choice - it will be your own doing. The power and the control over that choice, however, also rests solely with you. You can put this into perspective and have the day of your dreams, but you need to actively choose this. As the old mantra goes, you can only control your own behaviour but you can't control other people's; this includes the topics of conversation they might engage in at your wedding.
I suspect you've become caught up in the headiness of your wedding planning, as well as your disappointment and unfulfilled childhood needs in not receiving the love you deserved from your family, and as such are not seeing this situation with the clarity that you might. Your envy of the love which your friend has in her life - and which to some extent I do understand having grown up with a violent and absuive father - is tainting your perceptions of what your day means to you.
You have clear options available. You can choose to let it. Or you can choose to celebrate the love that really matters on that day: that between you and your fiance, which on this important occasion no painful past history should be allowed to taint.
At present your MoH rather than your own personal happiness is occupying the forefront of your thoughts and concerns about this day. This needs relegating to the place it merits. (Also, no one is ever the recipient of 100% of others' attention, even as a bride). But, as I think you already know, this isn't really about your MoH, but about you. When the time is right it might therefore be worth seriously considering seeking some counselling or trauma therapy to come to terms with your past. I know all about that still-crying child inside the seemingly confident adult, who has not had her needs met by the people she trusted most to care for her in her formative years. I've been that child too. With work, it is possible to find a place of consolation and acceptance, and to live a happy, loving and fulfilled adult life. I'm proof of that.
I wish you happiness. It's up to you whether you choose it, and I hope you will. 💐