There are other companies that provide the same level of service as Trek, who don't have the vested interest of selling you a bike... Backroads and Ciclismo Classico are 2. They also have excellent bikes. Backroads now gives you a choice of upgrading to a Specialized Ruby.
I liked the Trek trips we took. I did not like the participants!
This is one of the reasons I built a custom bike with couplers that I can take on bike trips. I may or may not do this for my trip to Portugal. Cycling Country now has access to Trek bikes, instead of the Orbeas we had last time. If they can get me a 47 cm wsd Trek, my own bike will stay home.