We never got an e-mail with an assigned time. It was part of the check in time assigned. When we got there, we were guided to an line to register for the test.
Took some time to register my granddaughter and once done the processed took no more than 20 minutes. Took some 15 minutes for my DIL to get the test result on her phone.
Then we were allowed to board.
the entire length was approximately 1.15 hours from the arrival and to ship.
This was out of Bayonne on Easter time on the Anthem. Capacity was at 80% and some 1,200 children.