The fees are not high, $160/yr, but still need to be collected in order to pay. As a regular park user, I pay no fees there (they are collected for boat ramp lot parking at the other entrance though). Insurance is a $2M/$1M requirement - again, horseback riders, mountain bikers, hikers all use the park without such requirement. We might be able to use LCO insurance (basically, TAC), but it might be a rider costing $$ or just an unwanted hassle). The paperwork I'd be happy to send you, Brad, if you wanted to look over it. My eyes glazed over just looking at the cover letter descriptive paragraphs. IIRC it wanted collected names of all, maybe at each event, and (I think) get nit-picky. Mid-Pen and other agencies simply and quickly give permits - like no questions asked.
Its been over 5 months (glacial) getting to this point. My gut says they are looking for ways to discourage. I believe an astronomy once had permitted use of the lot, maybe it was a bad experience. It could be nice for quick local astronomy though.