We spent pretty much the entire day walking around.. OUTSIDE! There was a weekend long summer festival setup so it was fun to check that out too. Just found out there are drastically different Pokemon you can find at night vs. day.
The big thing I have to say is the sheer amount of people playing this game is ridiculous. I have been gaming for a long time and I've never seen anything quite like it. People are getting outside, getting some sun and fresh air, excersizing, and might even meet a new friend. Over the weekend we probably saw around 300 other people playing , and that's no exaggeration.
Server errors seemed pretty fixed today vs. yesterday. Still some bugs with Pokestops but overall way better already.