I have Sixt Platinum status and have found a rate of 311 euros for a one week rental (IVMR) picking up in Paris (Voltaire Nation) and dropping off at Cannes in early June.

This is our first time renting with Sixt in Europe and also first time driving in France. I should add that we plan to take a road trip through Bavaria, Lake Como ending in Cannes. We've rented from Sixt in the USA several times with good results.

1. Any general advice from 'well seasoned' travelers?
2. What are the possibilities of an upgrade from IVMR - VW Touran or similar? (We are a group of 4 so extra space is welcome; currently own a BMW X5)
3. Any 'perils and pitfalls' to be aware of either in the rental process or road trip?

I enjoy driving and have rented cars in many countries including driving on the left in England and the Caribbean. Any tips would be helpful!

Cheers!