Hi İbrahimuney
Thank you for your request, greetings from Switzerland.
The decisive factor is the trips you are going to make. For two days, I recommend the Saver Day Pass, this card is valid almost throughout Switzerland (see Synoptic Map), a SwissPass Card is not necessary. Children do not need a ticket, they travel for free.
I don’t know which region you’ll be travelling to. As an alternative, you have the Swiss Travel Pass 3 days which gives you many advantages, for example free admission to more than 500 museums, many Mountain excursions included, unlimited travel by train, bus and boat.
To park your car, I recommend our P+Rail parking areas.
I wish you a pleasant stay in our country.
Kind regards
NicolasK