"It's going to be amazing. We found a beautiful hotel in Cabo and we're in touch with the general manager to make it really, really special," Lorenzo told UsMagazine.com at BrittiCares Children's Hospital blood drive in L.A. Saturday.
"It's gonna be small -- we're not inviting a lot of people," he added. "It will be just family and friends."
The ceremony will mark the fifth time the Leave It to Lamas star (and father of six) has tied the knot; his most recent marriage was to Playboy Playmate Shauna Sand, which ended in 2002.
Lorenzo's big day will occur just 11 days after daughter Shayne Lamas celebrates one year of marriage to TheDirty.com's Nik Richie. (The former Bachelorette star eloped at the Little White Wedding Chapel in Las Vegas on April 18.)
"Nik is a great guy. They're very happy together," Lorenzo told Us. "Family's the most important thing, so Shawna and I plan on going down and spending Christmas with them. Nik's family lives in Orange County and it will be wonderful. I'm looking forward to it."