You are going to have a blast! Our 4th cruise is scheduled for 1/6/01 on the Explorer of the Seas, and the days can't pass fast enough! Don't worry about formal night! Some people go all out, others dress like they're going to a wedding. My husband always wears a suit -- no tux -- I'm doing good to get him in a suit on vacation! The kids are going to remember this always. Do you live close to the ports? Has your family ever seen a cruise ship up close. You will be blown away! We took our 5 year old grandson on his first cruise in 1995. He still talks about it! Most of the ships have an excellent children/teen program. Steven couldn't wait until dinner was over so he could get back to "Camp Carnival."
Have a wonderful trip.