One of my bridesmaids brought a steam iron. (Best thing ever for right before the wedding) If your dress wrinkles easily.
If permitted, consider having snacks in the dressing room for those helping you especially if you are taking pictures before the ceremony. It makes for a long day even if you eat before arriving.
Take your time! You're the BRIDE! You will NOT remember anything!! Make sure to try and say hello to as many people as possible!! It's such a blur when it's all said and done!
The main thing I would say is totally ignore family drama! It's your day NOT theirs and if they are going to act like buttheads, they probably are going to regardless so don't even worry about it! Let them duke it out themselves and enjoy the day!
I had to go to the bathroom before the ceremony in my dress and my bridesmaids helped me. Yes, it was a picture of several women holding up my dress as I used the bathroom. Simple tip, don’t wear any undergarment that doesn’t unfasten from the bottom.
Be sure that you and your bridal party have an emergency kit. I made a kit for all of my bridesmaids to bring along for the wedding day. At some point, everyone was rummaging through their bags for something they needed. Their kits contained: Band-Aids, Altoids, bottled water, a nail file, a mini sewing kit, clear nail polish, Kleenex, a mini lint roller, gum, hand sanitizer, hand lotion, a travel-sized toothbrush and toothpaste, Q-tips, granola bars, peanuts, and plain lip balm. Those kits came in quite handy.
Entrust someone to bring some yummy goodies for everyone to snack on while getting ready. I'm not talking junk food, nor does it have to be full meals. Everyone should have something simple to munch on that will keep them full until the reception but not so full that they feel stuffed! We had finger sandwiches and a veggie tray, and they were both a big hit with the bridal party.
DO the first-look photo. If you're worried about your fiance' seeing you in your dress and losing that "a-ha" moment when walk up the aisle to him, then do the first-look with him blindfolded. That way, you get to see him and calm your nerves a bit but you won't ruin that special moment for him to see you in your gown when you take that special walk up the aisle. My fiance' and I did our first-look this way and I'm so glad that we did!