Ask and choose a Wi-Fi pass at the reception of the hotspot.
If you are in an airport, go to the closest selling point "RELAY".
At the back of the card, you will find your personal identifier and your password.

You can buy at the reception of the hotspot :

The "2 hours" pass : 2 hours of connection during 24 hours after validation of your on-line purchase.
The "pass meeting" : valid 24 hours from your first connection.

At the reception of hotels Accor

the "anytime 2 hours" pass : 2 hours of connection during 24 hours from your first connection
the "pass room" : you can connect as many times as you want during 1 day, between 6 pm and 9 am the next day.
the "pass meeting" : allows up to 5 users to connect simultaneously and as many times as they want during 1 day, between 8 am and 8 pm.