"Just being together [is the best part of being on tour]," Hill gushed.
"Being together on stage and for me -- it's been 10 years since we actually did a proper tour together -- to be on stage with her and hear her sing every night, it's pretty special," McGraw added.
"We don't get to hear her sing very often, especially live, and so every night [I] really just look forward to hearing her and trying to keep up with her, which is the biggest problem for me!" he said.
As for whether the couple's three daughters, Gracie, Maggie and Audrey, will be joining them on tour, the pair says, "They'll be out!" though not too often.