I’m sorry but I can’t stand by anymore. I grew up when guys would dress up as ladies, cheer leaders, French maids, ect… for Halloween. Keep in mind that in the beginning of theater all roles were played by men. I would not want to put my child in a situation that would cause them any harm physical or emotional. But we are talking about a 5 year old, at that age they don’t think boy girl, they think mom dad but don’t know what makes the difference. If I was you I would remove the post to stop this debate, but like everyone else that is my opinion. I hope you and your grandson have a great time in Disney, what ever he decides.