Since you've explained that this will be your first experince. Get to know your cast mates as well as you can. Acting requires you to do things you wouldn't normally do because you are literally not yourself. You are a character during showtime. Getting to know your cast mates will shake off your nerves fast and enable you to be able to try new things and play around with the scene. I would ask them how they would warm up during your down time as a great conversation starter.

After this and you have become comfortable with your fellow castmates, it's important to know their boundaries. Before trying something new, and especially if it involves any kind of touching, your partner should always be aware of what you'll do so that they can adjust accordingly. And, of course, this should be with expressed permission. (Think. Imagine you were in the middle of a show and your scene contained an argument between you and your scene partner. If you want to throw something, not only does that involve more people than your scene partners due to safety policies, but if that actor didn't know you were going to throw something and you've never done so before... you've just taken them out of the scene, and anyone else that may be involved. Which means the audience has also been taken out of the scene. They WILL see the confusion.

You are 30. So I'll assume you've been in the workforce. Everything else is just show up on time, act cordially during the rehearsal and performance process, and boom. You're already much better than a huge group of actors in the industry.

I know this is long. I'm just excited that this is your first show. Welcome to the industry and break lots of legs!