Deerfield MA zipline? Worth it?

[MKCP5]

Has anyone done the deerfield ma zipline tour? DD is thinking about doing this as a gift for her bf's birthday. She really wants to do something fun and active. There is a good deal for it right now and the weather will still be in the 50's

2nd question though, they are minors. Will they let them go unaccompanied? : ( I would stay there and wait for them, but don't want to go on the zipline.

thanks!