I am basing this on the Europe through the Back Door itinerary on page 50. I am, however, starting the tour in Paris and leaving out London. I have been to CT but my husband has not and I really want him to see it. Maybe I leave it out or leave out Como (where he wants to go). Also thinking about cutting Florence a day short since I have been there, as well.
When were you in the CT? I was there in mid-October 2008 and there were very few other tourists, the weather was perfect and all the trails were open. Within a few years, it became a huge tourist destination and according to what I've read it's often mobbed with visitors.
Telling us when you plan to go could make a big difference in the advice you'll get.
I have the RS ETBD 2015 edition. This is the itinerary:
3N London
4N Paris (day trip Versailles)
2N Gimmelwald
2N Florence
1N Rome
1N night train to Venice
1N Venice
1N night train to Munich
3N Munich (day trip to Neusch. Castle, day trip to Salzburg)
2N Riverboat cruise
2N Amsterdam
Total 22N
IMO that's batsh!t crazy to try on one's own, unless you are a 20-something backpacker who can sleep in any conditions. With the exception of the riverboat and Gimmelwald, it's going to major destinations where you have to learn how to get around and you only have time for a few of the many sights and the top ones will be crowded.
Here's his detailed itinerary for Paris and the Alps:
Paris. Day 1 arrive evening train. Day 2 historic "core" incl Notre Dame, Sainte Chapelle, Louvre and Eiffel Tower. Day 3 Champs Elysees, Rodin and Orsay Museums. Day 3 Versailles, Day 4 a.m. train to Swiss Alps
Gimmelwald. Day 1. Take 7 am train, arrive Interlaken 2 pm (with 2 train transfers). He doesn't explain that to get to Gimmelwald, you need to take the train to Lauterbrunnen, bus to cable car to Gimmelwald. THEN go on a late afternoon hike. Day 2 sightsee Alps (if rainy, day trip to Bern - and yes, you have to go back to Interlaken for the train to Bern). Day 3 Short hike to and take the train (from Interlaken, of course, to Florence).