1. I second the advice about eating before your wedding, and in general just try to make sure you are comfortable in all the ways you can control. There are enough variables that you can't control so make sure you handle the ones you can control.
2. As for marriage, just talk about everything! If you're feeling resentful or angry or ignored, just address the topic. You'll feel so much happier getting whatever it is out in the open.
3. Say you're sorry. Lots of times we feel too proud to say it but it's a huge way to move past some (real or perceived) transgression. This especially holds for things you might consider minor.
4. Have fun and good luck!