I love love LOVE shooting with prime/fixed lenses. Their crispness combined with the low aperture makes for the smoothest images and well worth the fact that I have to "zoom with my feet" :) The 50mm is my absolute favorite lens to shoot with, and it's on my camera about 70% of the time. I'll use the 24mm for fun wide angle group/wedding party shots and it also comes out a lot when I'm taking pictures of landscapes. My 70-200 comes in handy during wedding ceremonies, for when I want to get some close up shots of the couple or other details without having to walk right up to them. But that's about the only time I use it, and my 50mm is still on my camera for about 50% of the time during weddings. The 50mm 1.8 or 1.4 is the lens I recommend the most to beginners. It's a beautiful beautiful lens, and the price is unbeatable! (someday I wiiiiill have the 50mm 1.2)
I'm a natural light photographer, so having to buy lighting equipment is always a little bit of a painful pill to swallow since it's SO expensive, and I try to use it as little as possible. But as a wedding photographer it's definitely necessary for wedding receptions and other times when the lighting isn't optimal. I have one 580 speedlite, and two video lights. Using video light is an aweeesome little idea that I first heard about when second shooting for another photographer last year. Buying video lights is SO cheap in comparison to buying flashes, they come with rechargeable batteries, and they're a lot of fun to use! I mostly use these when shooting on the dance floor, with one on my camera, and the other set up on my lightstand or on my second shooters camera. If I'm on the opposite side of the dance floor from my lightstand or second shooter I can get really cool rim lighting or flare. Video light also works great for when you need some fill light in a shot, help lighting up the rings or other details, etc. It's nice because it's continuous light that I can turn off and on with a little switch and I never have to wonder if it's going to fire when I need it to, like I do on my flash.
I use Sandisk memory cards, there are a lot of good brands out there, but Sandisk is the one I chose to go with because it's one of the more popular brands with wedding photographers. I only use each card for 10 weddings (I make a little mark on the back for each wedding I use it in) and then retire it to use for portrait sessions or personal use. I don't want to take a chance on my cards ever corrupting and the older they get and the more used they are the higher the chance is that that will happen. I also only use 8GB cards for that same reason, if a card does ever corrupt, I'd rather have only 8GB of pictures on there as opposed to 32GB.
I bought my shootsac used about 2 and 1/2 years ago and it's still in greeeaaat condition. I love this bag so much, and it's well worth the $150 I spent on it. It's comfortable to wear, easy to use, and holds a lot of stuff. I love how it lays around my waist, and kind of molds to my body, so that I don't have this huge boxy bag of equipment sticking out of my side.
And here's a picture of my whole little camera family--taken with my iPhone :)