You can use them for the regular tapping if they are linked properly. If you want them to do anything requiring batteries then you'll want to both charge the bands and pair them to your phone so they can be updated to the latest firmware.
Thanks. I am unaware of anything else the MB2 can do and definitely only care about 2 functionalities: park entry, and ride entry.
Actually, the only other thing I think they can do is purchase merchandise (+food?) , charging to room and open hotel doors? which are actually a cool feature, but we're off property. so N/A. I don't care at all about the interactive statues and treasure hunts, etc but I think you've clarified above that is MB+. I know its all confusing!