Peter Yang

If he chooses not to use the app (either via your phone or his own) to check-in they will have to do the whole process there - taking the photo, inputting the passport information, linking a credit card. It will most likely be done in the same line as others but you will see others going through faster than you/him.
I would recommend doing as much as you can via the app. As Don mentioned not every person in the party needs to have the app as check-in can be done for all parties by anyone on the reservation. it really does make things faster, smoother and easier. They terminal staff tend to move very fast and there's a lot of noise, I fear errors in that kind of environment.

We normally do all three of ours on my wife's phone just makes check in easy for us. 
 
 

Just had our October cruise repriced yesterday and was able to save $450. 

Just had our October cruise repriced yesterday and was able to save $450.