Alaska Inside passage Nat Geo Lindblad with a baby?

Hi there! Has anyone ever traveled on a Nat Geo expedition with a baby/toddler? We are booked on a five night Alaska inside passage trip with a fourteen month old (and a five year old) and wanted to hear if people traveled with their babies on the Zodiacs or just stayed on the boat. This is a large family trip that was planned for a large celebration, and we are along for the ride (as in, we understand that this is not an ideal trip for a baby). Any firsthand experience would be super helpful!