Oh my gosh!!! Just enjoy everything to the fullest!!! Oh...you mean TIPS...shoot!
Well, we are getting ready to go on my third, and hubby's fourth cruise next week (this is on Norwegian, but we're going on a HAL cruise in November). The biggest thing I can emphasize is not to overpack...it's hard to resist the urge, but on my last cruise, I had at least four outfits that never were worn. Also, check out www.cruisediva.com
They have tons of great tips and I've used a bunch of them.
Have a great time!