You need to be under the care of a licensed professional - instructor, insured DM, etc. They have some local folks who offer guided dives. I took a group from my shop up last weekend and had a blast getting back in the lake again. That means the leader is responsible for adhering to standards - O2/First Aid kit, etc.
$60/day - you MUST purchase your admission prior to the day of entry. Currently folks line up on the East side (Student Side) for the 0800 opening, and entry is checked at that gate at that time. They're supposed to be opening the West (Peninsula) side soon, if it isn't already. Last weekend it was Porta Johns - they said they were waiting on their septic inspection to be able to open up the real bathrooms.
Fills are available on-site (Air, Nitrox, and some custom stuff. Fills were solid! Curt has a nice setup going there. $10/ea for air. Curt came by with a tractor+cart to haul cylinders up for fills during the day.
If you don't have 2 or more people in your vehicle, expect to have to drop gear off and park elsewhere. Carpooling gets you parking near the lake. It's kind of a land rush for picnic tables (just like the old days). They request 4 divers minumum per table - the tables are decent size though so if everyone cooperates you can do more. (X-table or similar to augment is nice).
Given all the changes + demand, I was actually pretty impressed with how smoothly things ran. Ken and Curt are doing a lot with what appears to be very little staff. They're being firm, but fair (and not uptight) on the rules.