Arie Luyendyk Jr.andLauren Burnhamhad an “amazing” wedding filled with sweet family moments, a source tells PEOPLE.

Among the highlights: Burnham’s grandparents served as the flower girl and ring bearer!

“The biggest laughs during the ceremony were for the flower girl and ring bearer,” says the insider. “Her grandmother was throwing the flowers first down the aisle, but then onto the guests. She was so cute and really connected with everyone.”

Arie Luyendyk Jr. and Lauren Burnham.Megan Firestone/Instagram

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Bachelorproducer Megan Firestone, one of the wedding guests, posted anInstagram photoof the bride and groom kissing, revealing her stunning sleeveless gown and his black suit.

“These two are married!! To witness this was an honor,” wrote Firestone. “Congrats@ariejr&@laureneburnham. Beautiful wedding. Beautiful couple. Beautiful family to be!! Tonight was special in so many ways. I love you both and newbie on the way!#Laurie#haikumill.”

“Here’s to love and the Luyendyks! 🖤 Last night was so magical!” wrote another wedding guest.

RELATED VIDEO:Arie Luyendyk Jr. and Lauren Burnham Celebrate at The Venetian Resort Las Vegas

“ABachelorproducer spoke and had some really great behind-the-scenes funny stories to share from Arie’s season,” the insider says.

Lauren’s dad, Dave Burnham, and Arie’s dad, two-time Indy 500 champion Arie Luyendyk Sr. were among the speakers, according to the source. (The moms both spoke at the rehearsal dinner on Friday night.)

Arie Luyendyk Jr. and Lauren Burnham.ABC/Lorenzo Bevilaqua

ABC’s “Good Morning America” - 2018

“The two sets of parents spent a lot of time interacting and genuinely seemed to be enjoying getting to know each other better,” the insider added.

“Love is not always perfect,” Luyendyktold PEOPLEin March. “Everyone finds each other in a different way. It’s not always a fairy tale, but as long as Lauren and I have each other, we’re happy.”

source: people.com