I took my boyfriend as a Christmas gift and he loved it. We are in our 20s but there were people of all ages there who were doing the ropes course and having fun. It was very safe and even though I was worried at first, the guides explanation made me feel better and there was always a guide or two watching out over everyone. It was lots of fun and I was up there for over 2 hours having a blast. The price was a bit steep, but it might be worth it for a splurge or do like I did and wait till they have a special on Groupon.
P.S. its pretty warm in the cave, so don't worry about dressing for the weather. I wore two pairs of pants and was way too sweaty.