I'm vocally against fortnite but I want to download and play it with a couple of friends
What is wrong with wanting to play it now?
I don't want to look hypocritical.
It's alright to change your mind about playing Fortnite. People's tastes change, and just because you disliked something in the past doesn't mean you have to always dislike it.
I feel like my friends will make fun of me for it.
Even if they make fun of you, it does not mean you have done something wrong. You can change and grow and alter your tastes as you like.