The beauty of it...you can tailgate for a couple hours and walk over to the Quad. It is absolutely rocking now. It has so many new things you won't believe it. The University has hit it out of the park with the Quad.
There are some tailgates at Manley but I'm not an expert on how many. The lots officially open 4 hours prior but you should be able to get there 5 hours prior without issue. Try it for a year and see how it goes. BL: there are not many spots anymore close to the Dome.