So the family supports Oracle because they once brought the America's Cup to Bermuda, while the Lions have their loyalty from the British roots.
"But we do have some great Kiwi friends who we're going to see when we're down in Wellington, so we do love you Kiwis."
Rhiannon admitted it was a long way to come to watch rugby, but said it was worth it for the Lions.
"They are the best of the best in the British Isles, and it's only every four years.
"So every four years we look forward to it so much, it's almost like looking forward to the Olympics.
"And you can't beat the atmosphere. You see another camper van, get chatting to them, find out where they're from.
"We all help each other out on where we're going next, what there is to see and do. You see someone in a red shirt? Everyone's chatting."
Rhiannon and Robin also followed the Lions to New Zealand 12 years ago.
This time around they were looking forward to showing it off to their kids, Jamie, 10, Ella, 9, and Sasha, 6.
It was one of the biggest trips they'd made together as a family, flying a total of 20 hours from Bermuda.
"They're very excited about seeing the haka, seeing it up close and personal.
"It's good for them to experience a different culture, too.
"We're going to go to the three tests, and in between those we're going to sightsee and tour around.
"Hit all the nice spots in the North Island, taste a bit of wine hopefully."
While the weather hadn't exactly welcomed them to New Zealand, Rhiannon said it was no problem for them.
She pointed out that they were usually "spoiled" in Bermuda, and now were focused on enjoying the sport and introducing the kids to New Zealand.
When they came for the 2005 tour Rhiannon said it was a "complete whitewash", thanks to the Lions losing every test on the tour.
This time around, she said they'd be happy as long as they got at least one win.
