How to reveal gender to my family on a cruise?

I am 5 weeks, 1 day pregnant with a baby girl 🎀 after our FET a couple of weeks ago. Our parents know that the FET was successful, but we haven’t told them the gender yet. This will be the first grandchild for my parents and everyone is so excited, so we want to do a small gender reveal for them.

We’re going on a Royal Carribean cruise next month with my whole family and my husband’s parents, and I think that would be a great time to announce the gender. I was wondering if anyone has any ideas of cute ways to do the reveal?

I tried posting in the cruise subreddit but they all attacked me for being “insensitive” and “disrespectful” to other cruisers and I had to delete my post. I promise that we don’t want to do anything that would cause a huge scene — think little things like a pink cake at dinner one night, pink cocktails, etc. I’d love to hear if anyone has any simple ideas along those lines!