Marseille transfers/taxis costs and avialabilty

[Bruce4fun]

Does anyone know approximate cost from airport to port in Marseille(large ship terminal)?

 

Also, we are staying overnight in port on Crystal Serenity, and need to get a taxi from the ship to the train station early in the morning i.e. 7AM for an 8AM train to Nimes. Are taxis waiting at the ship that early? If not, what does someone suggest for getting to St. Charles station early from the ship?

We know about the port shuttle, and Crystal also offer a shuttle, but it does not start that early(and does not go to the train station)

Thanks,

Bruce4fun