I will be in the Montreux area with my fiancée and her parents this year (2015) during the Jazz festival. The dates will be Mon. July 6 through Th. July 9th. We are staying in an house through airbnb in Yens - just west of Lausanne. We will have a car. I have a few specific, and a few general, questions about the fest. I usually don't over-plan but I want to make a good impression on my future in-laws and I hope to avoid making any obvious mistakes or missteps. We do have tickets to one of the shows at night, which I'm excited about. That night we might be out a little later since there could be after-shows to see and maybe a few more drinks to imbibe (soda for the designated driver).
The website says they have parking on the outskirts of town with shuttles to take you in and out. Any advice on those? Such as make sure you don't miss the last shuttle because its earlier than you think or something, or show up early because the lots fill up fast.
How accessible is the free music? Will I need to plan our presence at the various offerings or does it lend itself to wandering from stage to stage?
Any general tips, tricks, warnings, advice for a first time MJF goer?