Minimum night stays??

I'm well into the planning of our trip in April, and I'm having heaps of trouble finding somewhere to stay in Byron Bay with our camper trailer. The whole trip revolves around my wife's "need" to go to Byron Bay. And good on her too, if that what she wants, that's fine with me. Now, every park in that area has a 7 night minimum stay! We only need 2 nights, the 11th and the 12th. We are on the road for about 3 weeks and don't want to stay a week there, even though it's beautiful. Mabye this is the norm, but how do I get around this obsticle? Help...she's gonna kill me. :)
Chriso.