How long does this take? Do people with bags still go through different lines than people w/o bags? We haven't been since end of 2015, so a lot has changed. We usually take one backpack with us (for 4 people) and I have my purse, so I would be the one to go through the bag line and have them check both.
You go through whatever metal detector is available. Since bags have previously been checked, you just place everything in a tray - bags, purses, phones, keys (Just like you would at the airport, but you get to keep your shoes on, lol) - and walk through. They may wand you, too. Doesn't take long at all, maybe a few minutes. The nice thing is that if you are taking a boat or monorail, you've gone through security prior to getting on either. Although I had to go through both again once when taking the monorail from GF to Epcot.