So I just got back from Disney Springs and walked the whole place and went into exactly one store (Uniqlo) to buy some shorts. Uniqlo had plastic barriers up at the register (like I assume all stores do) and there was now only one entrance and one exit. It was certainly weird just being there and seeing everyone wearing a mask and all the other precautions. All things you never thought you'd see at Disney like the plexiglass at the register.
The temperature check process literally took about 30 seconds for my entire group since no one was there waiting. Once it gets busy, it'll probably take a minute or two, but it goes really quick. As far as people obeying the distancing guidelines... aside from a few people, most were following very well. Although places like the Marketplace Starbucks, Polite Pig and Chicken Guy were all pretty busy and there's clear areas wear it becomes "mask optional" almost, which is any congregation of tables you come across. For example, the worst I saw was across from the starbucks, people were going to find places to drink and most people in the area had their masks down (as they are allowed per Disney's rules) because they were all drinking their starbucks.
I will say that the pictures Disney released yesterday that have the "Do Not Stand" markers were very misleading as to how they are handling things. Those markers were at World of Disney and, aside from the temperature check areas, ONLY World of Disney from what I saw. Everywhere else had the "Please Stand Here" markers. I sort of get it for World of Disney though since that story is the most popular in Disney Springs, meaning it's likely to have the longest line to enter.
Lastly, THE HEAT. My phone said it was 91 degrees at 5:30, which is what it will be or worse all Summer. We weren't planning on only being there for an hour and a half, we were gonna stay longer, but that heat, compounded with having pour fresh air flow due to the mask, really made it tough. For reference, we were wearing surgical masks. I'm not sure if washable masks would be more or less hot, but I sort of assume more because of the material they're made of whereas surgical masks are lighter. As I local, i'll suck it up and wear the damn mask to go to the parks every once in awhile not only because it's required, but because it's the responsible thing to do. However, having to wear those all day outside would really make me think twice about booking a vacation until this is over.