How old do you must be to take a cruise for example "carnival" etc.?

Question

i want to give my friend wich hes 20 a cruise gift for his birthday im 8 and hes 2o how old do you must be?

Answer 1

princess will allow someone to make reservations who is "18".

most require someone who is at least 21(some age 25).

Answer 2

each line is different, but there is a general rule of 21+.  If you have an person 18 and under traveling there must be a person over the age of 25 in the same cabin with them.  This is true for Carnival, Holland America, Costa, Cunard.  I am not sure about the other lines like Norwegian or Celebrity.

Answer 3

All major cruise lines, including Carnival, have a minimum age requirement.  For some it's 21 - others, its 25.

Princess is the only cruise line I know that will allow guests to book at 18 years of age! They do not have a requirement that at least one guest be 21 years old.

However, you must be 21 years old to drink.

PS.

I just called Princess to make sure that I remembered correctly, and they re-confirmed that they will allow 18 year-olds on their own!