Hi sony, and welcome to MySwissAlps!
>> Day 4 , Gothard Panorama express to Lugano in return visit the Lugano village and back to Lucerne in the evening by 8.00 pm
The boat for the Gotthard Panorama Express trip leaves Luzern at 11:12, connects with the train at Flüelen at 14:10, and the train gets to Lugano at 16:38. If you want to get back to Luzern by 20:00 by the fastest route, you will need to leave Lugano at 17:42. Lugano is not a village, it is a city of over 60,000 people, and you won't see much in an hour.
You could get an earlier start by following the same route by boat and regional train instead of the Gotthard Panorama Express.
Reservations (at an additional cost) are compulsory for the Gotthard Panorama Express train sector (Flüelen-Lugano), but are not required if you travel on regional trains instead. Reservations are not possible for the boat.
>> Day 5, our flight from Zurich to Spain around 3.00 so on this day can we visit Rhine falls or visit transport museum or something else??
The key to deciding what is possible and/or practical is to use the Swiss Timetable to plan out your trip, and see how long it will take, including getting to the airport in time for check-in, security screening etc.
(Use the one on the right with the red SBB logo.)
>> for this Itinerary, we are thinking to buy Swiss travel pass for 3 days and saver day pass for 2 days(CHF 29 if buy it in advance)
You can only get a Saver Day Pass for CHF 29 if you also buy a Swiss Half Fare Card for CHF 120 for each adult and child aged 16+.
On days you are using the Saver Day Pass, unless you also have a Swiss Half Fare Card and Swiss Family Card, you will also need to buy a Junior Travel Card for CHF 30 for each of the children aged 6-15. If three of the younger children belong to the same family, the third and subsequent Junior Travel Cards are free.
>> without buying a half swiss fare pass , can saver day pass covers all the public transport and mountain transports??
No. The Saver Day Pass is valid for the whole of your Rigi trip, but will only get you as far as the village of Engelberg for your Titlis trip. Then you would have to pay full fare on the gondola from Engelberg to Titlis.
You can download a map showing where the Saver Day Pass is valid. Only transport depicted by solid red, yellow, black or white lines, or dashed (not dotted) red lines, is free with the Saver Day Pass. The pass is not valid on any routes shown with a dotted line, and you will have to pay full fare for those.
If you also buy a Swiss Half Fare Card, that will get you 50% discount on transport shown with dotted lines.
www.myswissalps.com/sw isshalffarecard/validi ty
Have you read the information about how to choose a pass?
www.myswissalps.com/tr ain/ticketspasses/prac tical/chooserailpass