I'm assuming it's in TICA, right? If so, you'll have a great time, unlike the CFA, TICA people are really nice and friendly and not so much back stabbers. I love TICA shows, it's a much different and more fun atmosphere.
Just some important tips: Write down your cats number on your hand, it can be hard to see his number only to realize you're mistaken. Cats numbers are put on top of a cage on a ring, that's when you bring your kitty up (they'll usually call it on the speaker too), you can't take your cat back until the card is either taken away or placed face down (unless a clerk/judge tells you otherwise). Don't say your cats name out loud or introduce yourself to anyone in a ring, some judges get really mad about that. It's considered a faux if you stand/sit/come around a ring to watch while holding your cat, if he's not up in a ring he shouldn't be there. The Bengal ring is usually really large and takes a long time to go threw, some judges will look at a Bengal and send it right back, sometimes that's a no, other times it's just to clear the space so the other Bengals can get threw. And if you have a question about a ring, ask the clerk, never the judge; judges on duty are usually a speak only if spoken to thing.
You probably already know all of this, but I did a lot of this stuff at my first shows as my mentor is in BC and I'm in Ohio.