What is the key difference between a PWC 'exclusion zone' and a PWC 'restriction zone' in NSW?

1. There is no difference — both terms mean the same thing
2. You must never drive a PWC in an exclusion zone, but you can drive in a restriction zone if you follow specific rules for how you ride there
3. Exclusion zones only apply at night, restriction zones only apply during the day
4. Restriction zones ban PWC entirely, while exclusion zones only limit speed