I managed to get up to Summer Streets pretty early on Saturday, about 9-ish. I got one of the free rental bikes with no problem, and rode up to 72nd and then back down to the Brooklyn Bridge and then took it back. Like a lot of other people, I was surprised by how quiet it was. If you can make it in this week, you should check it out. They also had some free skate rentals and helmet giveaways. I walked it for the last couple of hours, and then I went to a bike shop to check out bikes.
To me, it seemed like everyone was just strolling and riding pretty slow, like a big extra wide traction line, only with coffee and falafel available. That’s perfect.