On this week's Bill and Giuliana Rancic full episode, Giuliana Rancic and husband Bill Rancic go on a couples retreat to Tahiti where they become ordained ministers and officiate a vow renewal!

Read the full recap here! While at lunch, Giuliana mentions to Bill that they need some down time together to relax and reconnect. She suggests they plan an exotic vacation and go somewhere they've never been before.

The two end up choosing Tahiti and are excited because when they first got married, they made a promise to always stay connected and do things together to keep their marriage strong.

Back at the office, Giuliana's assistant Sarah reveals that she got engaged! Sarah tells the story of how her fiancé proposed on the beach while they were on vacation in Cabo and they will be getting married next year.

Bill stops by later to visit and Giuliana suggests that they make their trip a couples retreat with all of their friends so they can all participate in group therapy and relationship-building exercises together.

She thinks it's just what everyone needs to strengthen their bonds with their significant others but she plans to keep the therapy part a secret until they get to the island.

Before leaving for Tahiti, Giuliana and baby Duke Rancic go for a walk with Grandma. Giuliana is sad that she has to leave Duke with his grandparents but the vacation is for adults only. She and Bill are going to miss Duke terribly!

It's vacation time! After getting off the plane, they have to take a helicopter to get to their final destination. And Giuliana, who has a huge fear of helicopters, is not looking forward to it!

They safely arrive at the resort where they will be staying. All of the bungalows are located right on the water!

After a quick pool session, Giuliana announces to everyone the real reason why they're there: for a week of couples group therapy! Their friends are surprised but willing to give it a shot.

The first activity is a kayaking excursion. The men go first while the women shout words of encouragement from the shore. The women are up next! But they seem to be drifting in different directions.

It's time for dinner and the group is treated to a Tahitian feast! During dinner, everyone goes around the table to share something that they would like their significant other to improve on in their relationship.

Bill mentions to Giuliana that he would like her to give him a massage while she wants him to blowdry her hair. The two agree to learn how to do those things over the next few days.

After dinner, fire dancers perfom on the beach!

The next morning, they all head out on a boat for a snorkeling lesson. There's a giant stingray in the water!

Giuliana joins Bill in the hammock later on for some relaxation time. The two talk about their friends' relationships and Giuliana says that their friend Ari should marry his girlfriend Brenda during the trip.

Bill doesn't see how that could happen on such short notice, until Giuliana makes a surprise announcement! Giuliana confesses that she completed an ordained minister program online to receive her certification! But there's one more surprise: she got Bill certified too!

Later on, Giuliana and the ladies go down to the beach for a lesson in cracking coconuts. Giuliana spears the coconut to get to the water! Giuliana takes the opportunity to suggest that Brenda and Ari get married while they're in Tahiti.

Later, Bill and Giuliana take a boat to a special beach location to put their ordained minister status to good use by marrying Ari and Brenda!

When they offer to marry Ari and Brenda, their friends thank them but explain that they aren't ready to get married on a whim, especially without their family present.

Ari and Brenda suggest that Bill and Giuliana renew the wedding vows of their friends Farzin and Colet, who end up saying yes!

Afterwards, everyone celebrates with a group dinner. Giuliana and Bill feel stronger than ever thanks to their amazing Tahiti trip and they can't wait to return home and see baby Duke!