There are tons of ways to spend less money on a wedding, and afaic, the number one thing is to strip out the BS the wedding industry has put in place. You don't need napkins with your name on them, do you? Things like that were once markers of conspicuous consumption, but became must-have on the advice of people who profit from customizing matchbooks and other paper products.
Er, I, er, have opinions about this, I guess.
"I don't have time for martial law, I have to get to the gym!" zarathus