Planning a trip for 4 people to Sardinia for 2019 - looking for some advice pls - total rally noob here

Are the WRC dates fixed, I am looking to book flights but don't want to be left with no rally to watch...

We will fly into Olbia, and stay in Alghero - and hire a car for the duration (Thursday 13th June to Sunday 16th June 2019)

Gold Pass tickets are optional yeh? Would you recommend any of these? Or just explore ourselves?

Is the route released yet, is Alghero a good base or would you recommend elsewhere (Olbia?)

Anything else?
Cheers in advance
Ben