Obama voting on CNBC - booth hog?

Just now showing Obama voting in Chicago with his two girls by his side and looks like Michelle in the booth/unit next to him voting. He is finished but still standing there waiting for his wife and chatting with the kids. Now, I know there are tons of security around and these booths are probably set aside - but with all the people who are probably going to flock to the polls, don't you think he should move on and let the next person vote? Is it entitlement, nervousness or using a photo op that makes him stand there like everyone in the world can wait on him to vacate his polling booth?