DH and I did it a few years ago, along with his dad and brothers. It's a neat ride, but it's also very popular and crowded. Go with a laid-back, "stop and go" mindset, especially at the start, because the congestion makes it difficult to steadily cruise along. I recommend sneakers and flats, or mtb shoes and pedals.

We actually didn't get to do the whole route, because we were too far back in the field, and got diverted to a cut-off. If I were going again, I'd aim to be up front as much as possible.

Have fun!