Sim in Paris for 6 days
 

Hello'
I will be in Paris for 6 days
Interested to buy a SIM card with data.
Have few questions:
1. If lycamobile admit tethering? I have a MIFI router. its enough for me and my wife.... I will connect to a power pack in my back sac.
2. Online the sim is free of charges. what about in tabacos/Relay/ lycamobile selling points/supermarkets?
how much it cost if any?

Thanks,