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Fourth is the store hours. How long must you work from there? If the resto closes after lunch to open again by 5PM (some countries have this set up) what time must you come in to send that important email?

Also, how long are you planning on staying? Till closing time? The last thing you'd want is the manager glaring at your table because your P2P connection is 95% complete and its 10 minutes past closing time. What do you do? Close the connection? Or respect the "mobile etiquette?"