MarieMarie, I just got off Liberty of the Seas a week ago (sister ship to Freedom) and the teen club is AMAZING! There are a ton of teens 15-17(over 500 on my cruise) and the teen dance club is always hoppin. So whenever you get tired of your family and get rejected from the Catacombs, the teen club is a pretty cool place to hang out and dance.
From word of mouth, I heard of alot of people sneaking into the Catacombs by getting in with a big crowd or by using someone else's seapass who looked VERY similar. However, the group of girls that got into the catacombs was back at the teen club within 35 minutes!