Can u get a cruise only being 18?

You can't book a cruise on most lines (without your parents) till you're 21, on some till you're 25.
Disney will let you book some of its cruises at 18, but they're one of the more expensive lines.

These are the official quoted rules from each cruise line.

Carnival
Guests under 21 years of age at time of boarding must have a parent or guardian who is 25 years of age or older in the same stateroom. The only exceptions are married minor couples and domestic partner/same-sex union minor couples.

Celebrity
All guests under 21 years of age must be accompanied by a passenger of at least 21 or older in the same stateroom. This age requirement is waived for minor children sailing with their parents or guardians in adjacent staterooms.

Costa
All guests under 21 years of age when boarding must be accompanied by a parent or guardian in the same stateroom. On some sailings, even guests 21-24 years of age must have at least one person in the stateroom who is at least 25 years old and will agree to be responsible for the under-25 year old guests.

Disney
Any minor guest under the age of 18 must be accompanied by a responsible adult who is 21 years of age or older.

Holland America
All guests under 21 years of age must be accompanied by a parent, guardian or chaperon who is at least 25 years of age.

MSC
Guests under 21 years of age at time of boarding must be accompanied by a parent or responsible adult over the age of 21 who is booked in the same stateroom or a connecting cabin. This individual must expressly agree to be responsible for the minor at all times on the cruise.

Norwegian
All guests under 21 years of age must be accompanied by a passenger age 21 or older who "expressly agrees to be responsible for the under-21 passenger throughout the cruise." This older guest must be sharing the same or connecting stateroom with the under 21 passenger. Rules are waived for married couples under 21 years of age with proof of marriage required.

P %26amp; O
All Passengers who, at the time of departure, will be under 18 years old must be accompanied by a Passenger aged 21 or over who will at all times during the Package be responsible for their welfare, conduct and behaviour.

Princess
All guests under 21 years of age must be accompanied by a passenger at least 21 years of age or older "who shall assume responsibility for their care during the cruise."

Royal Caribbean
All guests under 21 years of age must be accompanied by a passenger of at least 21 or older in the same stateroom. This age requirement is waived for minor children sailing with their parents or guardians in adjacent staterooms or married couples less than 21 years of age with proof of marriage required.Can u get a cruise only being 18?
Do you mean sail on a cruise? Yes, with your parents or other adult. Disney allows passengers 18 and over to book, but Disney will be fully of kids and Disney characters and it's one of the most expensive and hard to book cruise lines.
only Disney allows 18 year olds to book a cruise without having to be in a cabin with another adult at least 25.Can u get a cruise only being 18?
Do you mean go on a cruise? Then no, you have to go with someone who's atleast 25. Only Disney let's you go when your 18. But only on some cruises.
No sorry, youngest you can book is 21.
No, you need to be 21
i think so