Blue Cruise is where it's at. I only have about 2200 on the clock but I would say about 1K +/- have been full on Blue Cruise (less the time I've been changing lanes).
First road trip was still on the dealer's tank of gas; 3 hours to Louisville for a Tool concert. We had a 3 car caravan headed up. I was lead. About an hour into Kentucky I called the car behind us and asked if they noticed if they noticed us driving erratic/etc. and they said no. They had no idea the damn truck was driving itself until I told them.
Since then I put it on whenever I can and my drive to work and home is 90% interstate so it's everyday. It has been raining here a lot lately and it still works well, although the "hands on wheel" message pops up a lot more in the rain.
When the road ahead is clear you can look around a little and see things you have driven by 100x and not noticed. Then the eyes on road message pops up; look up, and then enjoy the view again. Works well with sunglasses so far.
I am at heart a driver's car guy. 50% of my vehicles are manual sportscars; my wife's DD is a 400HP AMG SUV, etc. I love and mostly enjoy driving any vehicle when it's enjoyable to actually "drive" a vehicle (if that makes sense.) However, IMO the daily drive to work or the 3x yearly to see the in-laws is a doo-doo drive and that's where Blue Cruise or any other equivalent system fits in the life grind.
NOTE: I don't think I have used it into the sun like above, so no comment yet on that.
NOTE 2: The 80MPH limit should be a little more "flexible"; maybe ForScan will address this?
NOTE 3: In the times my better-half was in the truck with Blue on; she has had one butt-pucker-upper per trip while in the passenger seat. This is purely anecdotal and also less than an average trip, but noteworthy nonetheless.
As a comment; I know there are software updates forthcoming that allow lane change, more Blue zones, etc. But, for a reliable system in its infancy, it is pretty awesome right now, especially in a top selling and trusted vehicle.
Just my $.02 and the cash value is less than that + YMMV but, I am digging the Blue Cruise so far...
I'm excited to see the updates.