Cameron's relationship with Debbie (Charley Webb) has come under strain in recent weeks due to her attempts to have another baby with her ex Andy Sugden (Kelvin Fletcher) as a saviour sibling for their ill daughter Sarah.
As seen in pictures released yesterday, tensions over the situation will reach boiling point over the festive season as Cameron, Debbie, Andy and Alicia Gallagher (Natalie Anderson) all sit down for Christmas dinner together.
Power told Take It Easy of Cameron's Christmas: "On the exterior, he's trying to elastoplast a smile on for the sake of Debbie, but I think at some point he will implode or explode, one of the two, possibly into the New Year.
"Around Christmas, he becomes a bit of a peacemaker because everyone's so tense because of the situation. Christmas is stressful anyway as everyone has such high expectations. When there's alcohol involved and that kind of anticipation of the perfect day, then expect some stress."
Asked whether Cameron and Debbie can survive such a challenging time, he replied: "They both hope so, because they're having lots of fun together. It would be great to ride this one out, because every day Charley Webb and I turn up to work and make each other laugh. It's a relationship that's growing between two actors - there's definitely some mileage in it."
Cameron arrived in the village in March after previously having an affair with Debbie in Jersey.
> Emmerdale star Natalie Anderson teases "huge" Alicia decision
> Read more Emmerdale spoilers and news