If it is a "perfect" first date then it is with someone I am already enamored with and we could go shoveling shit together and I would be happy. He would stop to get me a drink of water, wipe the sweat off my brow. He would look into my eyes and it would fill my heart with awe and longing. Later on we'd take a shower (probably separately because we're shy still) then I would give him a back rub then one thing would lead to another...
Er.. not ideal.
Ideally I'd like to go on a trip to the mountains together. A hike or rafting trip or a trip through a cave/mine would be awesome. Almost anything that involves going to the mountains would be great. A trip to the museum or botanic gardens or other cultural attraction would please me if it was something he was into. Even a traditional movie and dinner would be fine by me.
I would not like anything involving crowds, loud noises, dancing, going to church, parties, clubs or sporting events. An exception might be a concert, though for a first date I'd prefer something quieter. This is because these things take a lot of energy from me (even if I enjoy them) and I would rather focus on my date than on managing the stimulation from the environment.