It's a free, public boat ramp (I think they charge a small fee on holidays). The ramp isn't in too bad of a neighborhood, so if you lock the vehicle and don't leave any valuables in sight, you should be fine. I don't think the po-po will blow a gasket for one over-night parking.
Yes, City Dock is going to be a mess this weekend. I recently found out that the slips and the dinghy dock are off-limits this weekend.
S/V Old Shoes
1973 Pearson 30 #255