The jet-setting couple arrived for dinner in the well-known restaurant Ivo in Venice on Tuesday. They were accompanied by Clooney's bodyguard and his girlfriend.
After starting off with a round of Prosecco and then white wine, the group enjoyed sautéed shellfish, smoked tuna, mussel soup, crayfish and artichoke risotto and charcoal grilled seabass.
In classic Venetian style, the foursome arrived and departed in a motorboat by a back pier close to the restaurant. They stayed about two and a half hours, leaving around 11:45 p.m.
The next morning, they flew out of Venice airport by helicopter.
Clooney, 53, owns a home on Italy's Lake Como. It's a romanic spot for sure – his pal John Krasinski wed wife Emily Blunt at the estate in 2010 – but a source recently told PEOPLE the actor and Alamuddin, 36, will tie the knot elsewhere in September.
Tuesday's meal wasn't the first time Clooney brought a significant other to Ivo. Back in August 2012, the Hollywood A-lister took then-girlfriend Stacy Keibler and (again) their bodyguard for a meal. He patiently posed for photos with all the staff of the restaurant.
In a show of his many talents, Clooney even found time to draw a caricature portrait of what appears to be the restaurant owner with his arms spread out and another portrait on a plate. The picture still hangs framed in the restaurant.
Other A-listers who've dined at Ivo include Jude Law, Anne Hathaway, Elton John, Naomi Campbell and Tom Cruise.