Amber Mariano

Brkich was a participant in the second season of Survivor, having auditioned for the season on a whim. She was a member of the green Ogakor tribe, and she was quick to fortify a strong friendship with fellow contestant Jerri Manthey, who helped construct an alliance with Colby Donaldson and Mitchell Olson.

Upon the merge, Ogakor managed to use the knowledge that one of Kucha's members, Jeff Varner, had received votes beforehand, and eliminated him, thus gaining a numeric advantage over the other group. Later in the game however, it was decided by a majority of the remaining players that Brkich had played "under-the-radar", and she was sent home, ultimately landing in sixth place.

As a member of the jury, she cast her vote for Donaldson, who lost to Tina Wesson in a 4–3 vote.

Immediately following her appearance on Survivor: The Australian Outback, Brkich appeared on the cover of Stuff magazine. Maxim ranked her as the 50th most beautiful woman in the world in 2004 and 73rd in 2005. She also appeared in various commercials for Adelphia Cable, Rite Aid drugstores, and Mountaineer Racetrack in West Virginia.[12]

Brkich was a member of the Chapera tribe, a group including Rob Mariano, Sue Hawk, and fellow The Australian Outback player Alicia Calaway. In the season's premiere episode, Mariano and Brkich agreed to form an alliance. They faced their first Tribal Council in the fourth episode, and their relationship was a matter of discussion; but ultimately, it was Rob Cesternino who was sent home. Due to a twist that dissolved one of the three tribes, Jenna Lewis and Rupert Boneham joined the Chapera tribe leading to Mariano and Brkich quickly fortifying a long-term alliance with the duo.

Mid-game, a tribal shuffle managed to swap every contestant to the opposite tribe with the exception of Brkich, who remained on the Chapera tribe with Lex van den Berghe, Shii Ann Huang, Jerri Manthey, and Kathy Vavrick-O'Brien. The tribe went on to lose the next challenge and upon leaving, Mariano informed van den Berghe that he would take care of him if he took care of Brkich. Van den Berghe, Huang, and Vavrick-O'Brien voted out Manthey in hopes that Mariano would keep his word.

After the merge, van den Berghe was voted out despite Mariano promising to take care of him. Mariano and Brkich also managed to maintain several "alliances," including their agreement with Boneham and Lewis, one with "Big Tom" Buchanan, and one with Calaway. Eventually, the pair ended up in the Final Four with Lewis and Boneham. Once there, Brkich won her first individual Immunity challenge, and she and Mariano convinced Lewis to vote out Boneham instead of forcing a tie. In the final three, Mariano won immunity and chose Brkich to continue with him to the Final Two. Facing the jury, they both met criticism for their gameplay. Ultimately, Brkich was victorious by becoming the Sole Survivor in a 4–3 vote, securing her the winner by receiving votes from van den Berghe, Calaway, Huang, and Buchanan while Mariano received votes from Vavrick-O'Brien, Boneham and Lewis. Before the vote was read, Mariano proposed to Brkich, which she accepted without hesitation.

After a 16-year and 32-season hiatus, Brkich, now using her married name of Mariano, returned to compete on the show's first all-winners season alongside her husband, Rob.[13][14] She was a member of the Dakal tribe.[15] After they lost the second immunity challenge, Mariano became the second contestant voted off as well as the second person sent to the Edge of Extinction. She lost the two Edge return challenges to Tyson Apostol and Natalie Anderson respectively and then became a permanent member of the jury on day 35. Her placement dropped down to 20th after the first boot Anderson won the second re-entry duel. Mariano voted for Tony Vlachos to win the season, which he did in a 12-4-0 vote and become the second two-time winner in Survivor history.

As an engaged couple, Mariano and Brkich participated in the seventh season of The Amazing Race and came in second place.

During a Roadblock challenge in Mendoza, Argentina, in the third leg of the race, contestants had to eat four pounds of meat. Mariano began the roadblock but very quickly determined he would not or could not eat that quantity. The penalty for not finishing the Roadblock was a 4-hour delay. By convincing several other contestants to refuse to participate, he ensured that several contestants were on the same timetable as he and Brkich. Also in South America, Mariano pooled his money with some other racers to bribe the bus driver to let the teams that contributed off earlier. When he did bribe the driver, Mariano used none of his own money.

In Botswana, during the sixth leg of the race, the couple was criticized by fellow racers, as well as host Phil Keoghan, when they drove by the car accident of another team, brothers Brian and Greg, without stopping. Their fellow competitors all checked in with the brothers prior to continuing on to the next stage of the race.

Mariano and Brkich ultimately finished in second place behind married couple Uchenna and Joyce. Amongst fans, there has been much speculation surrounding the final leg of the race. It has been argued that the production crew had intervened with the airport authorities and aided Uchenna and Joyce onto the same earlier plane as Mariano and Brkich. In the "Revisiting the Race" special feature on the Season 7 DVD, Mariano, along with Uchenna and Keoghan denied these accusations. Mariano describes Uchenna running around frantically trying to get onto the flight, which the final edited version of the show does not portray. Keoghan cites the fact that the decision to re-open the door rested solely with the pilot, and that intervention by the production crew would have resulted in someone leaking such information out. Although Mariano and Brkich lost the one million dollar grand prize and "The Amazing Race 7" winners' title at the final leg of the race, they managed to place 1st in the 2nd, 4th, 7th and 10th legs. They were the only team to not come in last place on any legs of the race.

In 2007, the Marianos competed on the All-Stars season of The Amazing Race as newlyweds. After achieving first place for the first three legs, they came in last and were eliminated in the season's fourth episode which aired on March 11, 2007.