I don't engage with people who feel the need to question my choices for fun or entertainment.
"Aren't you too old to go to Disney?" The answer requires just one word. "No.", then I smile and move on.
"Are you going back there
again?!" The answer requires just one word. "Yes.", then I smile and move on.
If they ask why, I'll give them 4 whole words...."Because I like it."
There's no reason to let other people's opinions or questions cause any distress, nor do we need to give rude or sarcastic, or clever or funny answers. Just the simplest answer and go on with your life.