This is such a great rainy day/winter activity! You can be at any skill level or strength and still enjoy yourself. You can stick with your friends or wander around. I don't know much about the difference between rock climbing and bouldering, but I guess we did bouldering. The room was huge and had different "caverns" and places to slip in between that lead to other walls to climb. For our first time there, we had a blast running around and finding new challenges.
Everyone climbing around, who seemed to be pretty experienced, were friendly and polite. There is one price you pay for the entire day, so depending on what time you go you can really get your money's worth. We only made it an hour and a half before finding ourselves a little worn out.
If you really want to get out and don't mind spending a few dollars, this is such a great way to break out of that winter rut!