Julie,
I'm excited to hear that someone else is going. I know there will be many more before we actually sail, but getting a thread started now will help us get to know each other.
My DH and I, his youngest DB, his DW, and their 6 kids will be with us. Their kids age from 8 to 19 and this is their first cruise too. This is our 4th, but all the others have been on the Magic. We're both WDW cast members and live in Orlando. His DB and family live in Wisconsin.
Have you read the 'Passporter'? It's a great guide, and had loads of detail about everything you can expect on board, but if you have questions that I can answer, I'd be happy to. As I said, I've never been on the Wonder, but the ships are very similar. I can't answer any questions about Nassau, but everything else is pretty familiar.
ttfn,
Renae