It is highly unlikely that you will miss Christie Falls as you drive into Milford Sound. The busses actually give a better view, as I noticed, since they have higher elevated seats than the smaller vehicles.
We made a decision to stop at Christie Falls on our back from the cruise 🛳.
Bowen Falls and Stirling Falls in Milford Sound certainly ranks up there as my favorites but Christie Falls even so close and not of much height is absolutely charming, the water flow is so clean and the sound so calming. đź‘Ś
Beside Christie Falls is the sign for Falls Creek walk, which is quite long, I would love to do just about an hour of the walk someday when I go back to Milford Sound for hiking.