Jun 3, 2010 - 1:48 AM
Yes, a Swiss Saver Flexi Pass is an option as well. You can indeed use it on day 1, 4, 5, 6 and 7.
Now that you mention that, there's also the option of a 4-day Swiss Saver Pass for day 4, 5, 6 and 7. Then you would need a full Zurich Airport - Paris point to point ticket, so it depends on the price of that ticket whether this option is more economical.
Seat reservations are only necessary for international trains (to Paris) and some scenic trains. Seat reservations are not included in any of the rail passes.