Definitely not the best place to get coffee, the Dunkin Donuts inside the adjacent Walmart will provide you a better cup of coffee than this Tim Horton's location. Service is friendly enough, one of the customers had a "serious problem" (their latte didn't have enough cream?) and caused a scene causing the line to grow, inexperienced manager-on-duty was a little confused on how to deal with her problem (she wanted her money back).
Overall, I'd say that you can get more bang for your buck by getting your coffee elsewhere.
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