Virtually everything will be open. It's high season six ships in that day. The better question is where can I get out of the crowds. Six ships will put 20 to 30 thousand visitors on island only 50 thousand live here.
Here is the list
Allure of the Seas Crown Bay Carnival Conquest West Indian Co. Norwegian Epic West Indian Co. Norwegian Sun Anchorage Royal Princess West Indian Co. Westerdam Crown Bay