But there IS plenty of non-main quest stuff even in EA. So there is a ton of exploration.

Main Quest = Save Halsin from Gobbos and take out leaders, OR kill everyone else.

Side Quest Exploration = Tollhouse, Waukeens Rest, Gothyanki, Hag, Bog, Kahga Quest, Spider Lair, Ogres, Owlbear, discovering what happened to the Harpers, the entire Underdark, even the first dungeons isn't necessary but is a part of exploration.

And there WILL be so much more once out of EA. At least, that's how they're setting it up. So I don't get why everyone is saying there isn't enough exploration. The whole dang EA map is exploration with the ability to run right to the end if you want. Right?