Hello Gracia
Your review rates our guide - thank you for this. All our tours are climate neutral by public transport, as we have one of the best systems in the world. If you travel to Switzerland, don't expect that everyone is driving a car like in the US.
By the way, it's clearly described in the product offer, as the public transport have a lot of advantages for you as a guest and a tourguide. (no one loves to be blocked in traffic - something you don't have by train)
The customer service from Viator is not in our hands (we are the operator). I do not comment this part of your review. Just one thing - you had our direct number to call us. Always get direct to the operator is much easier.
The weather in the mountains can be tricky and can change within 10 minutes from clear sunshine to be complete in clouds - that's nature!
Kind regards