"I think the most exciting part will be being able to help people and see how they live," Patrick said. "I think it's going to be a culture shock. It will feel different to come back and be able to watch TV."
The mother-son team have spent the last few months brushing up on their Spanish and fundraising in anticipation of their trip.
Fellow parishioners and those who've made the trip before suggested the family watch "Slumdog Millionaire" to get an idea of the type of poverty they would encounter.
Holding down the fort at home will be dad Matt, brother Alex, 14, who both said they would love to make a similar trip in the future. Sister Anna, 13, has no plans to follow, content volunteering closer to home.