Adults go to Disney without kids all the time. DH and I honeymooned there, we did CRT, Hoop De Doo, and a few others I can't remember right now. To be completely honest, when I am at a character meal with my kids I am focused on them, getting them food, making sure they aren't going to burn the place down, they're not killing each other, etc. I couldn't care less who else is there and who they brought with them lol. In my opinion, anyone who is sitting around at Disney judging other people either needs to pay more attention to themselves, and presumably their kids since they are judging people for being there without kids, and isn't worth your time and worry. Have a great time at Disney!