There is a thread on my trip in the Adventure thread.
The riding was hard, but what I expected. There were 19 people on the trip. Twelve did the climb up Mt. Ventoux, DH and I did not. Despite not doing Ventoux, and only riding 175 miles in 5 days, we had 14,000 feet of climbing. I did the "avid" ride on day 2, and the basic or regular rides the other days. I did not do the short routes or get in the van at all. What I noticed is that almost all of the riders (all of the women) who did Ventoux were exhausted after that day, and skipped out on some of the other riding. The heat was a major factor, too, as well as the large amount of wine I drank... the food was awesome and so was the scenery. There was a range of rider ability, too.
The key to doing a hilly trip like this, for me, at least, is to remember this is a tour. I don't ride as fast as I do at home, even hilly rides at home. I saw more stuff and paid attention to the scenery more on this trip than on any of the other ones I've been on.