They smoke but they wouldn't like if you did? That's very fucked up.

Around here, it depends on the time of day. Since you have to be out from 8-5 (Why do you have to be out of the house at these times?) I'd say find a good park, a nice sized one with areas people don't generally go. Maybe those are more common in the suburbs. Once it hits dark until 11-midnight, I actually find hanging out behind closed businesses to be the safest places, as the parks are closed and cops don't expect potsmokers to be smoking where people normally are.

As for getting the weed, if you aren't doing anything those times you have to be out of the house, take the bus to go to your dealer. Take a backpack, and get a large ziploc bag full of dryer sheets if you're worried about any weed smell leaking out. I doubt people care too much on public transportation.