My spouse doesn't bike. Can he/she still come along?
Certainly. You have two options: 1) if your spouse will have a car, he/she can stay with us in the inns, dine with us, and enjoy a few other "off the bike" activities. While we're biking he/she can do other things in the area and meet us at the next inn. There is a big discount for this limited tour, since the spouse would not be taking a seat on the tour. Plus, you don't incur the single room supplement charge this way.
2) The spouse could take a space on the tour and simply ride in the van or relax at the inns during biking. There is no discount for this option, though.