I personally thought it was totally worth it. It was one of those bucket list things to do for me...It was a beautiful sunny day and I wasn't expecting the silence up there. Beautiful views,didn't see any sharks,myself. They will dip you into the ocean if you want them to..It was neat!
I have read here that parasailing is one of the excursions that gets cancelled from time to time due to weather / wind. It was cancelled on our Fantasy sailing,but I didn't plan to go that time. The jet ski tour was also cancelled,which we did plan on....have a " plan B" in mind,perhaps.