Terry,
No clue what the cart shuttle costs at this time but we did it last April and felt it was more than reasonable and felt it a fun way to travel through Grand Case, and the cart driver was a very nice person to chat with, as well.
I hope you love GCBC as much as we did. Don't forget to seek out the pool - it's very pleasant and when we were there, we were the only ones using it. <img src="http://www.traveltalkonline.com/forums/images/graemlins/handshake.gif" alt="" /> <img src="http://www.traveltalkonline.com/forums/images/graemlins/handshake.gif" alt="" />