Early starters don't forget your lights. The CHP does check. I think that you can drop them off at the clothing dropoffs.
Last year I had breakfast at TRP (the one put on as a fundraiser). That worked pretty well although I would recommend skipping the sausage unless you are sure that it won't make you ill later.
When I have stayed in south lake tahoe I've had a cup of motel coffee and choked down a couple bagels on the drive over. That's not quite as good but it works.
Eating a solid breakfast and getting a start on digesting it before you start riding is important.