(CNN) -- It's the weekend. It's the World Cup. It's Brazil. That makes three good, maybe even great, reasons to party. And rest assured, there will be plenty of revelry Saturday in the land of samba. There always is, on any day. But that does not mean that harsh realities won't intervene -- perhaps related to protests, stadium problems or other issues that dogged the World Cup in the weeks leading up to football's biggest tournament. Here's a look at five things to look out for Saturday, both on and off the field. Two European football stalwarts face off After one game Thursday and three on Friday, Saturday will be the first day with four World Cup.
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There will be four World Cup games, in four locations, on Saturday
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The most highly anticipated matchup may be between England, Italy
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They'll meet in the Amazon city of Manaus; field conditions are a concern
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Greece, Uruguay, Japan, Ivory Coast, Costa Rica and Colombia will also play
One of them, @placeholder, claims to have invented the sport though it can only claim one World Cup title, from 1966.