Yes this is the correct price for the panorama carriages : 36 CHF per person + Interrail fees. It increased from last year at 25 CHF :(

You need to log the train before boarding like usual and then show both the app and the reservation.

There are reservation-free carriages at the front : no panorama windows but less crowded and pull-down windows.

Thanks for the reply,  when you say log do you mean enter it into my interail planner before travelling ? 

Also this is the only journey on my route that I think needed booking well in advance,  so for the the other train journeys how far in advance should I reserve those ? And are there train journeys I won't need to reserve? 

Thanks 

Within Switzerland, no reservations are needed.

Night trains, Eurostar and international TGVs should be booked as soon as you know your travel date. For the rest: it depends. If you mention toute, date and departure time, people may be able to give some indications.

Thanks we are travelling in July not certain of times yet but all journeys will be by day .

So from basel to chur I won't need a reservation ? 

My next train journey will be from Tirano to Lake garda ?

Lake garda to Venice ?

Venice to Ljubljana ?

Ljubljana to Budapest? 

Correct. Reservations in Switzerland are not a thing. You can reserve some trains but almost nobody does it and it's basically wasted money.

Lake Garda is not a station. There are several towns along that lake, so you should check where you want to go.

But it should be no problem to book your reservations a few weeks in advance. Also, regional trains in Italy, such as Tirano to Milan, don't have reservations. Just board and find a seat.

Trains in Italy (Frecce + Intercity) can be booked on tickets.oebb.at (no booking fees). Same for Ljubljana to Budapest.

Great thanks for that