You might want to talk to your dive op about how they will communicate with you in the event of bad weather. My guy (Living Underwater) calls me the night before if things look like they will be sketchy in the morning, telling me to await his phone call in the morning before I head down to the pier. Depending on where you are staying, phone calls might not be an option. But you REALLY need to work out a procedure in advance for how this will be managed/communicated. Otherwise you could be sitting for a very long time since conditions might look OK where you are but they are NOT good where boats are departing.