Yes, temperature checks are still in place. They are done by Advent Healthcare as you approach the entrance to a park. The check is done by workers with handheld thermometers that they point at your forehead. Bag check is now done by automatic scanners you walk through. Everyone, bag or not, walks through the same scanners. You'll need to take significant metal objects out of your bag and hold them as you walk through. Failure to do so will flag you for further inspection, where someone will need to look in you bag. I removed my water bottle, but left my small battery pack in the bag and was fine. I've heard umbrellas also need to be held as you walk through, but no firsthand experience there, since I've never taken an umbrella to Disney. The only time I got flagged was the one day I had my glasses in my bag. The glasses case triggered the additional inspection. My experience was pretty much the same for each park as far as temp check and security. Can't speak to the stroller question, since I don't have a need for one.