oh i didn't realize you had to eat with other people... i don't really know anything about cruises lol. i'll have to look into that!
The DCL board on this site covers a lot of the things you'll want to learn if you do decide to go--other things I'd suggest looking into are the standard tips (so you're not surprised when it gets added to your bill), what food is and isn't included (most is, but some isn't), strategies for arriving in port (some people like to go early, some swear by coming late and strolling aboard once everyone else is on the ship), and dress-up ideas--DCL cruises always have Pirate Night, and some have Star Wars or Marvel Day at Sea.
I did a Marvel Day at Sea cruise on the Disney Magic in 2018, and I had a blast (if you're not a Marvel or Star Wars fan, though, one of those specialty cruises might be a bit much--it was basically nothing but Marvel on that day, and the whole cruise had a bit of Marvel flavor). It has some of the same feel as a Disney World vacation because, well, Disney, but it's a much different trip. It's much more relaxing (though you can find plenty to keep you busy if you like!), and for me it was a much, much more social trip. I'm not a social butterfly by any means, but as a solo cruiser I found myself striking up casual vacation friendships with the other two solos I met, several crew members, and a couple of families who happened to go to a lot of the same activities I did. I was able to have as much alone time as I wanted, but I found it way easier to fall into conversation with people than in my regular life.
I was nervous about dining with one or more strangers, but ultimately made the call to just let Disney assign me a tablemate rather than request to eat alone. Some people have horror stories about it, but a lot of people on the board have had very positive experiences. Mine was the latter; I still have my tablemate friended on Facebook (and I'm
not the kind of person who normally friends people I meet on vacation!). From what I've heard, requests for a solo table are typically granted, especially if you're in the later seating. It's also possible to bail on your table and request a change if you go through the first dinner and decide you never want to see those people again--or you have the option of eating dinner in Cabanas or getting room service, though I personally wouldn't choose to miss the rotational dining. That was what made me brave enough to give it a try; I knew I could get out of it if I just couldn't stand whoever I was seated with. Depending on the cruise, too, you may be alone anyway--I was seated with another solo, and the third solo I met was at first seating and was alone because they just didn't have anyone to pair her with.
I really loved my cruise and I'm very glad I went, but when it came time to book my next solo trip I ultimately decided I'd rather repeat Disney World than repeat the cruise experience. Loved it, but didn't love it more than WDW. Your mileage may vary, though; I'd enthusiastically recommend trying it out for yourself if it sounds at all appealing to you.