I read a very funny blog post awhile back, which was written by a gay couple who'd decided to bring their children to Disney.
They were prepared for stares and questions, but what they go instead was smiles and tons of "Pixie Dust"... which led them to conclude that Disney must be staffed by hordes of young gay people.

Because in the author's mind, there could be no other explanation for why they were being treated like family!
But Disney castmembers treat
everyone like this. They will make you feel special and unique and very, very welcome. You are absolutely allowed to hold hands, and you may even experience some very sweet moments, like the one my husband and I enjoyed a couple trips back...
It was late and when we walked into the Nemo ride, there were only a few other people in line with us. When we got to the loading dock, holding hands, the castmember grinned at us and said, "Wait a moment! I'll put some empty cars in front of you, and some more behind you. It'll be your own romantic ride, all by yourself!"
I swear, I was giggling like a 12yo on her first date, by the time we got into our car.
Hold hands, enjoy each other's company. Don't worry about judgement. You'll have a wonderful time!