Generally people will arrive 60 - 90 minutes before. The central seating areas fill in quickly and the CMs keep crunching people in to fit as many guests in as possible yelling for them to fill in every space. The further side areas and very back rows fill in last as guests file in. Once they open up you get in and are seated fairly fast.
The dinner packages get you a seat and they are central and in the back rows. IMHO they aren’t a great bargain other than guaranteeing you a seat.
You didn’t mention when you are going but busier times of year draws a more crowded stadium. When you leave it’s a crowd filled process of getting out and the bus stops also get filled but there are a steady stream of resort buses to get you back to your resort. Be prepared for more of a wait.
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