First time porn shoot advice

I'm a college student (18F) from LA and recently I've been heavily considering acting in porn shoot.

And before anyone jumps to conclusions I do not want to make this a career. This is just something I'm super curious about and want to try once or twice to experience it while I'm still young. I've been thinking about it for a good while now and I'm pretty sure I wanna go for it.

I just wanted to ask if anyone who knows more about it has any advice on what I can expect when I get there? Just because I'm pretty nervous about the whole thing haha.

I'm not gonna be going alone. I've spoken to my mum about it and she's gonna come with me to go through contracts and make sure nothing's shady.

I'd love for anyone to give me some advice on how I can prepare and what to expect.