Hello, what is the most affordable ticket/pass for two adults, one 7 year old, and one 3 year old to travel from Paris to Vallorbe, Switzerland on June 20th, 2025? I see a super saver ticket for 11:55-15:47 for 308.80 CHF total for our family of 4 or for 7:56am-11:47 for 256.80 CHF total for our family. Are there any passes or discounts that could reduce the price further?