The news clip I saw blamed the druggies and homeless. As they were filming someone appeared to be shooting up. Add that to the risk to staff and customers, liabilities etc. Drive thru only is about the only option short of fully fencing the site and having 24/7 security stopping trespassers.There is some pretty suspicious ne'er do wells milling about out front.
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A homeless guy, looking for a washroom, came into a fast food place I was at and he smelled so bad some people left.
I can envision panhandlers looking for spare change at the drive thrus.
When we did the Trent-Severn and Rideau we only went to Smith's Falls. We were told that boats the moored along the canal in Ottawa would wake to panhandlers sleeping next to the boats. Made people think about what they left on deck.