How are finances to be handled? Will you opt for a joint account for all the household expenses? Do you prefer individual “his and her” accounts, with a separate “our” account? Who pays for what? What about savings? Do you plan on discussing “big ticket” items, or will you just assume that your spouse will be thrilled with a new expensive surprise? Cash or charge? Are you going to be in debt for years paying off your wedding or a new car? Beginning a marriage deeply in debt is an enormous strain... try to avoid that.
In some relationships, money equals power; and the one with the most cash calls the shots. If one of you opts to stay home raising the children, does that means you have no say in how the finances are handled? Would you have to ask for an allowance? Where will your personal spending money come from? And you do need a personal fund of available cash.