THere is parking, you might want to go online and get your parking pass before hand, it depends on when we get done, if you have seats like I do, we are going to put our stuff somewhere safe, maybe even back at the hotel then come back over for the concert, if you are in the PIT I would say you probably are trying to take advantage of early entry and get to the front of the pit so probably not any time to put your items away, so best to bring a little bag, get something like a CD signed, something that can be carried, put away and safe.
Dinner I would think you will be eating at the show, LP doesnt go on till 9 or so, we probably get in at 630 7pm area, one or two opening acts so could eat during that. I want to see incubus and LP, but if Mutemath is also playing I wont mind missing that set as much.