Need Help Getting to Cannes on UA

Need to head to Cannes, France next week, and I am having some difficulties planning my trip since I can only fly on UA metal for the type of ticket I am on. UA does not fly to Cannes. Any suggestions as to where I could fly into and then –

A: Buy a ticket on another European airline (preferably where my Star Gold status would help)
B: Take some sort of train
C: Take some sort of car

I will be traveling with three other people and a whole lot of luggage.