Im a CM, but we just rocked up one morning a couple of years ago, so cant comment on prices because they tell us something completely different. But we walked there, took about 10 minutes from the port, just down one road (might take 15 or a bit more with younger kids). I thought it was really nice there and lots to do. We spent a couple of hours there, and had unlimited food (I would say the food was good, but for CM anything that isn't in the mess is good food haha) and drinks in the package we had. We had to leave midmorning to get to work, and it was getting busy.
They were fun and friendly and clean. Theres also other things to do there too. The photos were extra and pricy from what I remember, me and my friend split a package of three that I think was $75 for three photos of your choice (I think I paid $25 and she paid $50 and had 2), but for me it was once in a lifetime and one thing i really wanted to do since I was a kid so they probably could have charged me double and it would have been worth it...