DH and I have a joint account which pays for bills only (as in mortgage, power, water, gas, etc). Each month, $1,000 is automatically transferred from each of our personal accounts and put in to our joint account. We each also have our own seperate chequing and savings accounts where the rest of our pay goes.
For the wedding specifically, we used our Line of Credit against our house to pay for it (not ideal, I know) and we are paying that debt of slowly. The interest rates are so low right now that we pay about $25/month in interest on $14,000 of debt, which I think is not too shabby.