Thanks everyone.
after much searching on Carnival website
“
I am booked on back-to-back cruises. Will I be tested in between voyages?
Irrespective of vaccination status, all guests will be tested on board, between voyages, if the subsequent cruise is more than 16 days.
Back-to-back guests traveling on another Carnival Cruise Line ship within one day of disembarking their first voyage should inform onboard Guest Services in advance so they can receive the required pre-travel COVID-19 test before they disembark (if the next sailing requires a test, based on cruise length and destination requirements). Guests must present their negative test results upon arrival at the cruise terminal for their next voyage.
Back-to-back guests traveling on another Carnival Cruise Line ship within 2-7 days of when they disembark their first voyage should present proof of their previous cruise to the health screening staff at check-in so they can receive the required pre-travel COVID-19 test at the cruise terminal (if the next sailing requires a test, based on cruise length and destination requirements).
The test will be offered on a complimentary basis for both vaccinated and unvaccinated guests.”
hopefully all testing will end