Catholic Church Service?

Question

This is an attachment on my last question.
My boyfriend is taking me to his Church, and he is Catholic. I was wondering about things like what I should and shouldn’t do.
Here, I will explain my situation. I am a protestant, and am planning on staying one. I wanted to go to his Church to see what it is like, not to join.
Do I have to do the thing where they make the cross on their chest? Or should I not do that because that is not part of my religion? Are there things like that that I am expected to do? And are there things that I am not allowed, or not supposed to do? Like communion for example. I don't think that I am allowed to do that, I think I just go up and get a blessing.
Thanks so much.

Here is the first part of my question.
http://answers.yahoo.com/question/index?qid=20070828211124AA5TstU&r=w

Answer 1

You don't have to cross yourself, but you can if you want. It's up to you. You may get a blessing if you wish, but the blessing will only come from a priest. If that's what you want to do, just cross your arms over your chest. If you don't feel comfortable going up, that's okay too. You can stay seated in the pew if you would like. I have more than a few times, and you'll probably see other people staying in their pews too (although most don't). When I first attended mass for the first time, I was so nervous. I thought everyone was watching every mistake I made. Trust me, they're not. Most everyone is focused on the mass. Actually, the only time I look at anyone is during the "peace be with you", and when a line is forming for communion. If you would like to follow along, that's fine. But it is probably a good idea (and easy too!) to just walk in, sit in a pew, stand when people stand, sit when they sit, sit or kneel when people are kneeling (your choice- you don't have to kneel if you don't want to, but if you decide to sit in the pew when others are kneeling, sit forward a bit because the other person behind you will be kneeling close and may need a little room to rest their elbows while they pray). And when the congregation recites prayers in unison, you don't have to follow... just listen. Just listen and watch, sit and stand when others do, and you'll do just fine.