Thanks for the feedback before the weekend. It turned out to be a great weekend to train on the course. I joined the open water swim practice in the lake with the training camp group. Unfortunately, the supported rides were Friday and Sunday and my only free day was Saturday.
I did see a number of riders on the front side getting in some miles. I did the loop twice on Saturday and have the following comments:
Traffic was light for the majority of the ride from ~9:00 am - 2:00 pm
There are hardly any flat spots on the loops. All rollers that are back to back to back to back to back.
All but one car/truck gave me plenty of room to ride. The one car was close but not too close.
I don't know how the avg Bike time for 2014 Choo (6:13:14) was faster than the avg bike time for 2014 TX (6:18:13), or 2015 TX (6:20:23) IM TX bike is so much easier and 3+ miles shorter.
Cheers