The first thing most people do at a wedding is make a beeline for the bar. It makes sense on so many levels: For the single folks, nothing takes the edge off nosy relatives curious about their romantic status like a stiff gin and tonic. Those seated at a table with strangers tend to be stricken with a sudden and intense thirst for social lubricants. As for everyone else? Let’s just say it’s generally frowned upon to toast the happy couple with water.

From the bride and groom’s perspective, the anticipation of getting all your guests adequately liquored up without going overboard—or spending all your money—can seem like a tall order. So we asked five experts about some of the most common wedding drink pitfalls, and how to avoid them. We suggest reading this with a double Scotch in hand.

Mistake #1: Wasting money on Champagne.

Turns out the Champagne toast isn’t what it used to be. “We end up throwing two-thirds of it away,” said Kiran Pinto, the managing partner of the Ivy Room, a private events space in Chicago. “People have really strong feelings toward sparkling wine,” she continued. One person’s favorite Champagne might be too sweet or too tart or too effervescent for another guest; it’s impossible to make everyone happy. Instead, “let people toast with what they like drinking,” Pinto said.

If a Champagne toast is high on your priorities list, Pinto suggests passing around a limited number of flutes right before speeches begin and ditching real-deal Champagne for a less expensive sparkling wine like Prosecco or Pet-Nat. Most of your guests won’t notice the difference. Don’t forget to stash the bar with a few more bottles of your favorite white and red wines to make up for the nixed Champagne.