We had wanted to use Shipwreck Beach for our welcome dinner next November. When I asked our sales consultant about it she mentioned that for the times of year that it gets dark early, you have to pay for a lighting package. Otherwise it is too dark for your guests. She told me that the smallest lighting package was about $2000!
We decided that the St. James Room at the Boardwalk was suddenly a wonderful idea.
Not sure if this would affect you, but thought I would mention it. Good luck with the planning.