What do I take for pregame and how much??😭 urgent!

I’m pregaming before clubs with probably max 5 guy friends of mine, my friends got a bottle of vodka, I’ve been told to bring “anything. tequila, whisky, vodka, fireball, anything that u wanna get drunk on”. how big of a bottle do I take? and what should I take If my friend already got vodka 😭 Please help it’s urgent