Hi,
No the shrimp is not spicy, just nicely seasoned. We ate in the Parrot Cay, and although I believe the selection is the same, the waiters serve you drinks in Parrot Cay as opposed to Beach Blanket which is serve yourself. Also in Parrot Cay they assign you a table (we got there early and had a window seat), whereas Beach Blanket is self seating in or out. I am not a buffet person, and this was great.
Also, there are two separate buffet lines in Parrot Cay, one for the kids and one for everyone else, although adults and children can pick from either. Desserts were awesome!