Vacation with toddler

Is a 20 month old too young to take on a cruise? We’re planning a trip to take our daughter on a 4 night cruise to the Bahamas. There are beaches, pools, pet the dolphins etc. It’s mostly just about getting away as a family and spending a few days together because with our schedules we rarely do that. But my family thinks we’re crazy for taking a toddler on a trip she won’t remember and especially for taking her out of the country. I understand she’s young that’s why we’re not doing Disney cause she won’t remember it but just because she’s young and won’t remember a lot that means we can’t do anything fun? We got a good deal on this vacation so it’s nothing extravagant. I was so excited and now I feel like I’m doing something wrong. I’m already nervous about flying and being on the boat but I’m trying to put my personal anxieties aside since I know it’ll be worth it. But now having no support it’s making it not exciting to look forward to anymore. What are your honest opinions?

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