If they do it like they do here, they will have a certain position group (or 2) signing that day. They set up a couple tables and there are a couple lines. What players sit at the table for your line is a crap shoot. And it's for kids... not adults. They only let kids get autographs. Since my son is under 7, I get to walk through the line with him. You'll probably have to do it with your grand-daughter or have your son do it. Again, not sure how they will do it in Oxnard, but that's how it goes here. You might get lucky and catch a few by the fence after or before practice...